The contents of the library on September 30, 1921 were as follows:

During the year the following work was done by the binder:

Magazine and Periodical Publications:

7116 copies of the Journal were used for exchange purposes.

Seven new exchanges were added to the mailing list and fourteen were removed.

Six new subscriptions were ordered and six were discontinued.

The total number of exchanges on September 30th was 586. The subscriptions totaled 130 and the number of gift subscriptions was 73, making the total periodical publications currently received, 789.

Evening Hours:

The library was open on meeting nights until ten o'clock, in all, thirtyfive evenings.

Respectfully submitted,

H. JERMAIN CREIGHTON,

Chairman.

PHILADELPHIA, January 11, 1922.

REPORT OF THE COMMITTEE ON MUSEUM

FOR THE FISCAL YEAR ENDING SEPTEMBER 30, 1921.

To the President and Members of The Franklin Institute:

The following historic models and apparatus have been added to the Institute's collections during the past year:

Air pump of Dr. Joseph Priestley. Presented by Mr. Coleman Sellers, Jr. (An account of Dr. Priestley and his work and a history of this interesting apparatus was prepared by Mr. Sellers and appears in December, 1920 issue of the JOURNAL, Vol. 190, page 877.)

Odometer made by Isaiah Lukens, one of the two first elected vicepresidents of the Institute and Chairman of the Institute's Committee on Inventions. Presented by Mr. Henry R. Towne, of New York City. (A sketch of the life of Isaiah Lukens by Mr. Coleman Sellers, Jr., and a

description of the odometer by Mr. Towne, appeared in the JOURNAL of the Institute for August, 1921, Vol. 192, page 239.)

Printing telegraph for sending and receiving messages. Invention of George M. Phelps, Brooklyn, New York; U. S. Patent No. 91,662, June 22, 1869. Presented by the Pennsylvania Hospital, Dr. Owen Copp, Physicianin-Chief and Adminstrator.

Oertling Balance, complete with set of weights. The first accurate scales for the chemical laboratory, constructed about 1840. Presented by Dr. Harry F. Keller.

Respectfully submitted,

PHILADELPHIA, January 11, 1922.

ALEX. E. OUTERBRIDGE, JR.,

Chairman.

REPORT OF THE COMMITTEE ON MEETINGS

FOR THE FISCAL YEAR ENDING SEPTEMBER 30, 1921.

To the President and Members of The Franklin Institute:

Eight stated meetings were held during the year ending September 30, 1921. These were held on the third Wednesday of each month, from October to May inclusive, at the hour of eight o'clock, with the exception of that of May 18, which was held at three-thirty o'clock in the afternoon.

The following is a list of dates, speakers with titles and synopses of their communications:

October 20, 1920: Joseph S. Ames, Ph.D., LL.D., Director of Physical Laboratory, The Johns Hopkins University, Baltimore, Maryland, member of the Institute, presented a paper on "Einstein's Principle of Relativity and Its Bearing Upon Physics."

Einstein has introduced into the interpretation of the phenomena of nature, as observed on the earth, an entirely new concept and an entirely new mode of approach." The lecture gave an account of his method and attention to some of the conclusions obtained by it and to their verification by experiment and observation. Emphasis was laid on the fact that Einstein has developed a method and not a theory. The paper was printed in full in the January, 1921 issue of the JOURNAL.

At this meeting Mr. Coleman Sellers, Jr., presented to the Institute an air pump formerly the property of Dr. Joseph Priestley. An account of this historical apparatus appeared in the December, 1920 number of the JOURNAL.

The Howard N. Potts medal was presented to Mr. Edward Payson Bullard, Jr., for his Mult-Au-Matic Machine.

November 17, 1920: The paper of the evening was presented by Dr. Charles A. Culver of the Canadian Independent Telephone Company, Ltd., Toronto, Canada, on “Guided Wave Telephony."

The fundamental principles and limitations involved in high frequency

multiplex operation were considered and a brief historical resume of the invention and early development of this new means of communication given. Current practical engineering methods were discussed, including special applications to hydro-electric power line operation and train dispatching. The subject of attenuation and required power were also treated. Lantern slides were used to illustrate the subject and a working demonstration was given of communication by means of guided wave telephony superimposed upon a physical telephone circuit. Published in the JOURNAL, March, 1921.

The Elliott Cresson Medal was presented to Mr. W. R. L. Emmet for his notable contributions to the art of ship propulsion.

The Edward Longstreth Medal of Merit was presented to Messrs. G. L. Kothny and Robert Suczek for their Radiojet air pump.

December 15, 1920: Mr. W. C. White, E.E., Research Laboratory, General Electric Company, Schenectady, New York, presented the paper of the evening entitled "Some Operating Characteristics of Electron Tubes."

How

"Electron tubes or simply vacum tubes, as they are most often called, are coming into very general use for quite a wide variety of purposes. Their flexible characteristics and variety of properties also make them very useful in laboratories and for engineering tests and developments. ever, in the use of these tubes for special purposes, difficulties are frequently encountered which are due to properties of the tube which are not commonly known or understood." The lecture described a number of these more unusual characteristics, the effects of which, however, are often commonly met with in practice and give experimental difficulty or prevent the correct interpretation of results. The subject was illustrated by lantern slides. The paper was published in the JOURNAL for April, 1921.

January 19, 1921. Annual Meeting of the Institute.

Mr. John W. Lieb, Mechanical Engineer, Vice-president of the New York Edison Company, New York City, New York, member of the Institute, read a paper entitled, Leonardo da Vinci, Philosopher and Engineer."

The lecture presented a review of the activities of Leonardo da Vinci, as a Philosopher and Engineer, with illustrations and abstracts from his note-books, some of them translated by the lecturer. The review covered Leonardo's work in Military, Civil, Mechanical and Hydraulic Engineering, Aviation, Geology, Anatomy, Optics and many other branches of science, literature and the arts. The lecture revealed Leonardo as one of the greatest intellects of all time, assigning to him an even higher place in philosophy, science and mechanics than he already holds in the history of the graphic arts. The subject was illustrated by numerous lantern photographs of manuscripts and drawings from da Vinci's note-books. The paper appeared in the June and July, 1921 issues of the JOURNAL.

February 16, 1921: Colonel Marston Taylor Bogart, A.B., Ph.B., LL.D., Professor of Organic Chemistry, Columbia University, New York City, New York, presented the paper of the evening entitled, The Bearing of a Synthetic Dye Industry upon Our National Welfare."

Outside of those individuals who happen to be directly concerned financially, the average male citizen is probably not greatly interested in the availability or non-availablity of a host of dyes capable of producing all the hues of the rainbow. In fact, he might not even regard it as a national calamity if he had to wear a white tie instead of a colored one. But when he fully understands and appreciates that his own life, the lives of those dear to him, and the very existence of his country depend upon this same industry, the subject is likely to assume a totally different aspect." After a brief outline of the synthetic dye industry, there was described in detail how its by-products and intermediates are utilized for the production of important medicinals, explosives, incendiaries, war gases, photo chemicals, inks, perfumes, artificials resins, etc. In his fight against disease and death, the physician has no more potent allies than the products which owe their origin to the dye industry, and in war for national existence, no more powerful weapons have been developed than those of chemical warfare. A dye factory has been called a "potential arsenal." The impetus and encouragement which it has given to chemical research, and the effect of the same upon the teaching of chemistry in our educational institutions, were considered briefly also. The lecture was illustrated by samples of many of the compounds mentioned and by the actual preparation upon the lecture table of some of them. Published in the JOURNAL for April, 1921.

March 16, 1921: The paper of the evening entitled "Recent Developments in the Manufacture of Sulphuric Acid" was presented by Andrew M. Fairlie, A.B., Chemical Engineer of Atlanta, Georgia.

This lecture was limited in its scope to the nitration processes for the manufacture of suphuric acid. The features discussed included some of the developments in design and construction of plant, as well as developments in operation, which have become noteworthy during and since the war. Acidproof masonry towers, new varieties of tower-packing material, the MillsPackard water cooled acid chamber, other recent proposals for removing the heat of the chamber reactions by means of water-cooling, and nitration by means of oxidized ammonia gas, are some of the features which were briefly described. The subject was illustrated by lantern slides.

April 20, 1921: Dr. Charles E. Lucke, Professor of Mechanical Engineering, Columbia University, New York City, New York, member of the Institute, presented a communication on "The Motorship: Its Economic Position with Reference to the Oil Fired Turbine Steamer."

"The future of the American merchant marine will be determined by the success of our cargo-carrying ships measured by transportation costs in competition with foreign vessels. he motorship has been highly developed and extensively built in Europe, but not in America. The geared steam turbine steamer has been and now is the main reliance in this country, and is in competition at sea with the European motorship. Each has at present a proper but different economic position, which will be determined by analysis of weights, fuel consumptions and costs. The machinery of both classes of vessels is still undergoing changes, and the relative competitive position of these two

sypes of veased in the future will be determined largely by these changes, and & accond analysis will estimate the effects of the changes. There will probably dware a place for both types of ship, the problem being to define the ascation in which each is best, by analysis of characteristics, and to estimate Ok comparative numbers of each renured for handling world trade." The adurat was illustrated by lantern sides. This paper appeared in the July and and F**k numbers of the Jour

V die mesting Mr. Henry R. Towne of New York presented to the Accurate qu odometer made by faith Lukens, one of the two first elected A pudoute of the Institute and first Chairman of the Institute's Committee An accome of a matrument appears in the JOURNAL for

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4 crore P. M. Certificate of Honorary Membership ut to Cepedal Joke J. Pershing, General of the Armies of the

The Combi Shahul womeyng certificate, and Certificate of Honorary Audi-tape when prajknead to His Excellency M. Jusserand, French Ambassa

La Madonnaudas Pabry of the University of Paris, Paris, France. The Fund Mahai, wanyanying certificate, and Certificate of Honorary alchi tilpo tomb gunnamed to Dr. Frank J. Sprague of New York City.

1. pm 4 Awas of The Johns Hopkins University, Baltimore, MaryA Periban xarles Fabry's paper on "Studies in the Field of

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of Sprague read his paper "Electric Traction: A Review." A waome of the meeting appears in the JOURNAL for September, un papers by Dr. Fabry and Dr. Sprague.

indunda pa these meetings totaled 1244.

of most of the papers have been received and those not yet mined in early issues of the JOURNAL.

Respectfully submitted,

GELLERT ALLEMAN,

Chairman.

2. January 11, 1922.

PERORT OF THE COMMITTEE ON INSTRUCTION

FOR THE FISCAL YEAR ENDING SEPTEMBER 30, 1921.

1, the Board of Managers of The Franklin Institute:

courses offered in the ninety-seventh year of The Franklin Institute of Mechanic Arts, commencing in September, 1920, were substantially a. those given the preceding year. Classes were formed in Mechanical * Architectural Drawing and Design, Freehand Drawing and Water Drop Arithmetic and Algebra, Plane Geometry and Trigonometry, od Mechance und Strength of Materials, Machine Design, Structural and Thotical and Practical Naval Architecture.