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fectious Diseases: Causation and Immunity," giving the facts that have been established in this field up to date; and A Further Study of Involuntary Movements," by Professor Joseph Jastrow, supplementing a previous paper on this subject, will appear.
- Charles Scribner's Sons issued on Aug. 8 Stevenson's longexpected book on Samoa, entitled "A Footnote to History," being a narrative of the varied history of that island for the past eight years.
-J. B. Lippincott Company's August Bulletin of New Publications contains, among other announcements, the following: "Photography: Its History, Processes, Apparatus, and Materials. Comprising Working Details of all the more Important Methods," by A. Brothers. In the preparation of this work, the author's aim has been to produce a Handbook for the Use of Students of Photography, which should give the results of practical experience, and include as far as possible within a moderate compass mation gathered from many sources, and not readily accessible. The newer methods have been dealt with in sufficient detail, and special attention given to the processes in use prior to the introduction of the gelatino-bromide method. Some of these processes are in danger of being neglected through the facilities which the newer methods have introduced. But, as Professor Brothers demonstrates, the new processes do not give results equal to the old, and are totally unsuitable for some purposes such as making negatives for photo-lithography, and in various other ways. Where practicable, the plates illustrate the processes described,
Publications Received at Editor's Office.
APGAR. AUSTIN C. Trees of the Northern United
BOLLES, T. DIX. Chinese Relics in Alaska.
thus making the work distinctly more serviceable to students. "In Starry Realms: a New Work on Astronomy," by Robert S. Ball; "Regional Anatomy in its Relation to Medicine and Surgery," by George McClellan, M. D.; Steam Boilers: their Defects, Management, and Construction," by R. D. Monro. Of books in press, "A Short Course on Zoology Designed for High Schools and Academies," by C. De Montmahon and H. Beauregard; translated and adapted for American schools by Wm. H. Greene, M.D. Recent Rambles, or in Touch with Nature," by Charles C. Abbott, M.D.
- Ginn & Co. have nearly ready "German Orthography and Phonology," by George Hempl, Assistant Professor of English in 66 Fourier's Michigan University. They will publish in the fall Series, and Spherical, Cylindrical, and Ellipsoidal Harmonics,” with applications to problems in mathematical physics, by W. E. Byerly.
- Outing for August opens with the first instalment of Wheelman Frank G. Lenz's description of a cycling tour around the world. The rider is at present somewhere on the broad western plains, en route for the Pacific coast, and during his two-year jaunt he will traverse Japan, China, India, Persia, Turkey, Austria, Germany, Holland, France, England, Scotland, and Ireland. Mr. Lenz will communicate his experiences to Outing from convenient points of his journey, illustrating his articles by photographs taken by himself. The opening chapter describes the trip
Reading Matter Notices.
[Free of charge to all, if of satisfactory character. Address N. D. C. Hodges, 874 Broadway, New York.]
Taxidermist going out of business has quantity of Wash-finely-mounted specimens of North American birds, mammals and reptiles and skios of birds for sale,
Any person seeking a position for which he is qualihed by his scientific attainments, or any person seeking some one to fill a position of this character, be it that of a teacher of science, chemist, draughtsman, or what not, may have the Want' inserted under this head FREE OF COST, if he satisfies the publisher of the suitable character of his application. Any person seeking information on any scientific question, the address of auy scientific man, or who can in any way use this the paper, is cordially invited to do so. column for a purpose consonant with the nature o
EIGENMANN, CARL H. The Fishes of San Diego. including a full local collection of bird skins, show- Polytechnic, Organic and Analytical, desires &
Washington, Government. 8°. Paper. HOFFMAN, B. B. The Sloyd System of Wood Working. New York, American Book Co. 12°. 242 p. $1.
ing some great variations of species; also quantity
JEFFERSON, SAMUEL. Columbus. An Epic Poem. quickly to J. R. Thurston, 265 Yonge St., Toronto,
Chicago, S. C. Griggs & Co. 12°. 239 p. LINTON, EDWIN. Notes on Avian Entozoa. ington, Government. 8°. Paper. Ill. MASON, OTIS T. The Ulu, or Woman's Knife of the Eskimo. Washington, Government. 8°. Paper. Ill. RATHBURN, MARY J. Catalogue of Crabs of the Family Pericerida Washington, Government. 8°. Paper. RICKOPF, REBECCA D. A Supplementary First Reader. New York, American Book Co. 120. 122 p. 25 cts. SHUFELDT, R. W. The Evolution of House Building among the Navajo Indians. Washington, Gov. ernment. 8°. Paper. Ill. SHUFELDT, R. W. A Maid of Wolpai. Washington, Government. 8°. Paper. SMITH, JOHN B. Revision of the Genus Cuculla, etc. Washington, Government. 8°. Paper. 86 p. STYNEGER, LEONHARD. Preliminary Description NEGE new Genus and Species of Blind Cave Salamander. Washington, Government. Paper. Ill. STYNEGER, LEONHARD. Notes on a Collection of Birds made in Japan. Washington, Government. 8°. Paper. WILLIAMSON, MRS. M. BURTON. An Annotated List of the Shells of San Pedro Bay. Washington, Government. 8°. Paper. Ill.
Te exchange; Experiment Station bulletins and reports for bulletins and reports not in my file. I will send list of what I have for exchange. P. H. ROLFS, Lake City, Florida.
For exchange.-A fine thirteen-keyed flute in leather covered case, for a photograph camera suitable for making lantern slides. Flute cost $27, and is nearly new. U. O. COX, Mankato, Minn.
Finished specimens of all colors of Vermont marble for fine fossils or crystals. Will be given only for valuable specimens because of the cost of polishing. GEO. W. PERRY, State Geologist, Rutland, Vt.
For exchange.-Three copies of "American State Papers Bearing on Sunday Legislation," 1891, $2.50, new and unused, for "The Sabbath," by Harmon Kingsbury, 1840; "The Sabbath," by A. A. Phelps, 1842; History of the Institution of the Sabbath Day, Its Uses and Abuses," by W. L. Fisher, 1859;"Humorous Phases of the Law," by Irving Browne; or other works amounting to value of books exchanged, on the question of governmental legislation in reference to religion, personal liberty, etc. If preferred, I will sell "American State Papers, and buy other books on the subject. WILLIAM ADDISON BLAKELY, Chicago, Ill.
HEMIST AND ENGINEER, graduate German position in laboratory or chemical works. Address 213% E. 7th Street, New York, care Levy.
A MAN, 36 years old, of extensive experience, hav
ing the degrees of A.M. and Ph.D., desires a first-class opening as a teacher of Zoology and kindred studies in a college or university. furnish numerous testimonials or references as to success and skill in most modern laboratory methods. Address E. W. D., Md. Agr. College, College Park, Md.
A YOUNG MAN, with a thorough training in Anslytical Chemistry (including analysis of minerals, food, water, etc.), and holding a diploma of the School of Practical Science, of Toronto, and good testimonials, desires a position as Analytical Chemist or as assistant to such. Address to WM. LAWSON, 16 Washington Ave., Toronto, Ontario.
JOHNS HOPKINS graduate (1892) desires a position as instructor in mathematics and physics. Address A. B. TURNER, Johns Hopkins University, Baltimore, Md.
Made previous to 1870 preferred. Also, old and
WANTED.-A collection of postage stamps; one curious stamps on original letters, and old entire U S. stamped envelopes. Will pay sash or give in exchange first-class fossils, including fine crinoids. WM. F. E. GURLEY, Danville, Ill.
WANTED. To purchase laboratory outfit; bal
aзces, evaporating dishes, burettes, etc.. wanted immediately for cash. C. E. SPEIRS, 23 Murray street, New York. P. O. Box 1741.
For Sale or Exchange for books a complete private chemical laboratory outfit. Includes large Becker bal-ANTED. The services of a wide-awake young ance (200g. to 1-10mg), platinum dishes and crucibles, ing optical business; one preferred who has a thorman, as correspondent, in a large manufactur agate motors, glass-blowing apparatus, etc. For sale in part or whole. Also complete file of Silliman's Journal, ough knowledge of microscopy and some knowledge 1862-1885 (62-71 bound); Smithsonian Reports, 1854-1883; of photography. Address by letter, stating age and references. Optical, care of Science, 874 Broadway, quirers. F. GARDINER, JR., Pomfret, Conn. New York.
across the Alleghanies from Pittsburgh via Washington to New York, and is profusely illustrated.
-The experiment station of Cornell University conducted an experiment in 1890, showing very decided beneficial results from removing the tassels from a part of the growing corn; their calculations showing about fifty per cent gain from the rows from which the tassels were removed over the alternate rows on which the tassels were allowed to remain. This remarkable showing caused a similar experiment to be undertaken at the Ohio station in 1891. Thirty-two rows of corn, running over quite uniform land, were selected upon which to make this trial. On Aug. 1, the tassels were pulled from each alternate row. At cutting-time four rows, having the tassels removed, were cut and shocked together, then four rows from which the tassels were not removed were shocked together. Continuing this throughout the thirtytwo rows, they had when done four shock rows of each. When husked these shock rows were weighed separately. They also
Recommended and prescribed by physicians of all schools
separated the merchantable from the unmerchantable corn, and calculated the yield of each separately per acre. They find that the unmerchantable corn from the four plots from which the tassels were removed averages 26 per cent, while the averages from the other four rows is 21 per cent unmerchantable. The calculations also show that the average yield per acre is about one bushel less than where the corn was left undisturbed. It is probable that the tassels were not removed in this experiment early enough. To insure or even make possible beneficial results from removing tassels, the pulling should be done as soon as they appear, and before the stalk has weakened itself in an attempt to perfect the tassel. The theory upon which this experiment is based is that the strength that would otherwise go to the maturing of the tassel and production of pollen is diverted to the use of grains, and from their more complete development more corn is produced. The fodder in this experiment was not weighed, because back-water from a high river damaged it to such an extent as to make the weight unreliable.
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Societas Entomologica. International Entomological Society, Zurich-Hottingen, Switzerland.
Annual fee, ten francs.
The Journal of the Society appears twice a month, and consists entirely of original articles on entomology, with a department for advertisements. All members may use this department free of cost for advertisements relating to entomology.
The Society consists of about 450 members in all countries of the world.
The new volume began April 1, 1892. The numbers already issued will be sent to new members.
For information address Mr. FRITZ RUHL, President of the Societas Entomologica, Zurich-Hottingen, Switzerland.
Ex-President Andrew D. White, of Cornell University, says: "I believe that the highest interests of Christian civilization and of humanity would be served by its adoption."
"So set down, our tongue is the best for the world to unite upon."-Brooklyn Eagle.
"The idea of Mr. Bell has much to recommend it, and the presentation is charmingly clear."-American, Phila.
"The result is a language which cannot fail to meet with acceptance."-Boston Traveller. "World English deserves the careful consideration of all serious scholars."-Modern Language Notes. Sent, postpaid, on receipt of price.
N. D. C. HODGES, 874 Broadway, New York.
reader of Science cite
a case of lightning stroke in
TO THE READERS OF SCIENCE.
which the dissipation of a small Titles of Some Articles Published in Science since | Baur, G., Clark University, Worcester, Mass.
conductor (one-sixteenth of an inch in diameter, say,) has failed to protect between two horizontal planes passing through its upper and lower ends respective ly? Plenty of cases have been found which show that when the conductor is dissipated the build
ing is not injured to the extent explained (for many of these see volumes of Philosophical Transactions at the time when light. ning was attracting the attention of the Royal Society), but not an exception is yet known, although this query has been pub lished far and wide among electricians.
First inserted June 19. to date.
Beal, W. J., Agricultural College, Mich.
Anatomy, The Teaching of, to Advanced Medical Brinton, D. G., Philadelphia, Pa.
Anthropology, Current Notes on.
Architectural Exhibition in Brooklyn.
Arteslan Wells in Iowa.
Botanical Laboratory, A.
Brain, A Few Characteristics of the Avian.
Bythoscopida and Cereopida.
Canada, Royal Society of.
Celts, The Question of the.
Chalicotherium, The Ancestry of.
Call, E. Ellsworth, Des Moines, Ia.
Cragin, F. W., Colorado Springs, Col.
Davis, W. M., Harvard College, Cambridge, Mass. Dimmock, George, Canobie Lake, N.H.
Farrington, E. H., Agricultural Station, Champaign, Ill.
Ferree, Barr, New York City.
Flexner, Simon, Johns Hopkins University, Baltimore, Md.
Foshay, P. Max, Rochester, N.Y.
Chemical Laboratory of the Case School of Applied Gallaudet, E. M., Kendall Green, Washington, D.C.
Children, Growth of.
Collection of Objects Used in Worship.
Cornell, The Change at.
Deaf, Higher Education of the.
Electrical Engineer, The Technical Education of.
Etymology of two Iroquolan Compound Stems. Eye-Habits.
Garman, S., Museum of Comp. Zool., Cambridge,
Golden, Katherine E., Agricultural College, Lafay-
Hale, Edwin M., Chicago, Ill.
Hale, George S., Boston, Mass.
Hale, Horatio, Clinton, Ontario, Canada.
Hall, T. Proctor, Clark University, Worcester, Mass. Halsted, Byron D., Rutgers College, New Brunswick, N.J.
Facial Expressions. Motor Muscles of, to Certain Haworth, Erasmus, Oskaloosa, Iowa.
Family Traits, Persistency of.
Fishes, The Distribution of
Fossils, Notice of New Gigantic.
Gems, Artificial, Detection of.
Great Lakes, Origin of the Basins of.
Hemipterus Mouth, Structure of the.
Hofmann, August Wilhelm von.
Indian occupation of New York.
Influenza, Latest Details Concerning the Germs of.
Iowa Academy of Sciences.
Jassida; Notes on Local.
Klamath Nation, Linguistics.
Lewis H. Carvill, Work on the Glacial Phenomena.
Maize Plant, Observations on the Growth and cal Composition of.
Hay, O. P., Irvington, Ind.
Haynes, Henry W., Boston Mass.
Hazen, H. A., Weather Bureau, Washington, D.C. Hewitt, J. N. B., Bureau of Ethnology, Washington,
Millspaugh, Charles F., Morgantown, W. Va.
Chemi-Nuttall, George H. F., Johns Hopkins University,
Maya Codices, a Key to the Mystery of.
Museums, The Support of.
Physa Heterostropha Lay, Notes on the Fertility of.
City. Osborn, Herbert, Agricultural College, Ames, Iowa. Pammel, L. H., Agricultural Station, Ames, Iowa. Pillsbury, J. H., Smith College, Northampton, Mass. Poteat, W. L., Wake Forest, N. C. Preble, Jr., W. P., New York City. Ruffner, W. H., Lexington, Va.
Psychological Laboratory in the University of To Sanford, Edmund C., Clark University, Worcester,
Psychological Training, The Need of.
Rivers, Evolution of the Loup, in Nebraska,
Sistrurus and Crotalophorus.
Star Photography, Notes on.
Storage of Storm-Waters on the Great Plains.
Tiger, A New Sabre-Toothed, from Kansas.
Trachea of Insects, Structure of.
Vein- Formation, Valuable Experiments in.
Wines, The Sophisticated French.
Schufeldt, R. W., Washington, D.C.
Scripture, E. W., Clark University. Worcester, Mass. Slade, D. D., Museum Comp. Zool., Cambridge, Mass.
Smith, John B., Rutgers College, New Brunswick, N.J.
Southwick, Edmund B., New York City.
Stevens, George T., New York City.
Stone, G. H., Colorado Springs, Col.
Thomas, Cyrus, Washington, D. C.
Thurston, R. H., Cornell University, Ithaca, N.Y.
True, Frederick W., National Museum, Washington, D.C.
Turner, C. H., University of Cincinnati, Cincinnati, O.
Wake, C., Staniland, Chicago, Ill.
PHONETIC VALUE OF THE CH'I GLYPH IN
SAUGUST 19, 1892.
SINGLE COPIES, TEN CENTS.
Protecting Property Lightning.
American Bell Telephone The Lightning Dispeller.
95 MILK ST., BOSTON, MASS.
This Company owns the Letters Patent granted to Alexander Graham Bell, March 7th, 1876, No. 174,465, and January 30, 1877, No. 186,787.
Price, $20 to $30.-According to size.
The Patent Lightning Dispeller is a conductor specially designed to dissipate the energy of a lightning discharge, -to prevent its doing harm,-placing something in its path upon which its capacity for causing damage may be expended.
No recorded case of lightning stroke has The Transmission of Speech by Dispeller. So far as known, the dissipation yet been cited against the principle of the of a conductor has invariably protected under the conditions employed. Correspondence solicited.
all known forms of ELECTRIC SPEAKING TELEPHONES in104 fringes the right secured to this 105 Company by the above patents, and renders each individual user of telephones, not furnished by it or its 110 licensees, responsible for such un
Entered at the Post-Office of New York, N. Y., as
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More than Five hundred of the leading scientific men and women of America have agreed to contribute to the BY ALPHEUS SPRING PACKARD, M.D., Ph.D. paper during the coming year; and, as others the list of Labrador birds by Mr. L. W. Turner, are constantly joining in this move, to make the Prof. Jo paper more valuable than ever, it cannot be long Macoun, of Ottawa, Canada, has prepared the list of before there will be a body of over one thouMuch pains has been taken to render the bibor sand competent users of this weekly
tant suggestions; and it is hoped that this feature of medium of scientific discussion.
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Walker Prizes in Natural History.
The Boston Society of Natural History offers a first prize of from $60 to $100 and a second prize of a sum not exceeding $51, for the best memoirs, in English, on the following subject: CONTRIBUTIONS TO OUR KNOWLEDGE OF THE LIFE-HISTORY OF ANY PLANT OR ANIMAL.
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The American Geologist for 1892.
Edited by PROF. S. CALVIN, University of Iowa; DR. E. W. CLAYPOLE, Buchtel College; JOHN EYERMAN,
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