Back MatterSource: The Scientific Monthly, Vol. 50, No. 2 (Feb., 1940), pp. v-viiiPublished by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/17093 .

Accessed: 01/05/2014 22:31

Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp

.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact support@jstor.org.

.

American Association for the Advancement of Science is collaborating with JSTOR to digitize, preserve andextend access to The Scientific Monthly.

http://www.jstor.org

This content downloaded from 130.132.123.28 on Thu, 1 May 2014 22:31:10 PMAll use subject to JSTOR Terms and Conditions

THUE SCIENTIFIC MONTHLY-ADVERTISEMENTS v

UNITED STATES NATIONAL MUSEUM TIhe official repository of all national collections in natural history, anthropology,

engineering and industries, and American history is the United States National Museum, administered by the Smithsonian Institution. The act establishing the Institution pro- vided for a museum, and from the early scientific work supported by its private funds, valuable collections in all fields began to accumulate. These were greatly augmented by the numerous exploring expeditions of the middle of the nineteenth century, all of which were encouraged by the Smithsonian to collect natural history material in the new and unknown West.,

By 1879 the rapidly increasing collections overwhelmed the Smithsonian Building, and Congress provided funds for a Museum structure which was completed in 18 81. This sufficed until the beginning of the twentieth century, when another building became im- perative. In 1909 the Natural History Building was completed, the older building there-

- after being devoted to engineering and industries and American history. The main functions of the National Museum are repository, research, and exhibition.

The two former receive more emphasis here than perhaps at any other museum, for the reason that the great national collections in biology, geology, and anthropology constitute in effect a "bureau of standards" for those sciences, containing as they do many thousands of "type" specirnens. It becomes a large part of the duty of the more than 80 scientists on the staff to study and name new species and publish necessary revisions of known forms. The exhibition specimens, although constituting a liberal education for the 2,000,000 visitors coming each year, are numbered only in thousands, whereas the study collections must be counted in millions. These study collections are utilized by scientists from all parts of the United States and many foreign countries.

The National Museum itow contains an estimated 16,000,000 specimens, valued at more than $150,000,000. Many of them, valued at perhaps one-third of the whole, are owned by the Smithsonian private endowments. The collections run through the entire gamut of the products of man's handiwork and inventiveness from delicate hand-made laces to locomotives, and of the life forms here on earth from microscopic diatoms to dinosaurs. - The Museum is administered by the Smithsonian Institution, its Secretary being, ex

officio, its Keeper; but is now supported mainly by Congressional appropriation. It is immediately directed by Dr. Alexander Wetmore, Assistant Secretary of the Smithsonian

- Institution, and is administered through four departments-anthropology, biology, geol- - ogy, and engineering and industries-and one independent division, that of history. Under

anthropology come the divisions of ethnology, archeology, and physical anthropology; under biology, those of mammals, birds, reptiles and amphibians, fishes, insects, marine invertebrates, mollusks, echinoderms, and plants; under geology, those of physical and chemical geology, mineralogy and petrology, stratigraphic paleontology, and vertebrate paleontology; and under engineering and industries, those of engineering, crafts and indus-

- tries, medicine and public health, and graphic arts. Through its researches, its publications, and its exhibits, the National Museum has

played a large part in enabling the Smithsonian Institution to carry out its purpose, "the increase and diffusion of knowledge among men." Smithsonian Institution-, Washington, D. C.

This content downloaded from 130.132.123.28 on Thu, 1 May 2014 22:31:10 PMAll use subject to JSTOR Terms and Conditions

vi THE SCIENTIFIC MONTHLY-ADVERTISEMENTS

TAYLOR Slide COMPARATORS LaMotte Chemical Control'Service Covering pH1 Control for control of Boiler Feed Water Control Residual Clllorine Control

pH, Chlorine and Phosphates and others. Standard routine tests developed by LaMotte Re- search Department in cooperation with authorities in these fields. LaMotte outfits are standardized, accurate, inexpensive and easy to operate. Write for further information on the subject in which you are interested.

LaMotte Chemical Products Co. Originators of Practical Application of

pHT Control Dept. HM Towson, Baltimore, ld.

Through continuous research we have de- veloped permanent liquid color stanidards on IN QUEST OF GORILLAS which we now give an unlimited guaraintee. This guarantee is unconditional and is car- By Dr. VV. K. Gregory and ried by all Taylor Color Standards.

Taylor Slide Comparators are molded from H. C. Raven plastic for compactness and durability and The story of an expedition under the aus- work on the slide principle for ease and sim- pices of the American Museum of Natural plicity of operation. History and Columbia University to collect

Single Comparators $15.00 adult gorillas in equatorial Africa. Extra Slides, each 7.50 Full inforrnation on request. The Darwin Press,

W. A. TAYLOR & CO., INC. New Bedford, Massachusetts 885 Linden Ave. Baltimore, Md. $3.50 $3.65 Postpaid

IN WASHINGTON, D. C. THE AVENUE TO

PENNSYLVANIA AVENUE'S

| WILLARD HOTEL 1 t h r . I I to the pulse-throb of political life in your th il country's Capital.

* Oy the brilliance and excitement of national e njoy activity as a guest of the historic Willard.

For Folder, Write "THE RESIDEr KNCE OF nr PREFSIrnDKNT.S!!

This content downloaded from 130.132.123.28 on Thu, 1 May 2014 22:31:10 PMAll use subject to JSTOR Terms and Conditions

T'E SCIENTIFIC MONT'HLY-ADVERTISEMENTS

.. Con venient,

Igram is a'development of rev- -tion of a Kodaslide.

olutionary significance in the Kodaslides are much lighter field of visual presentation- in weight than glass slides and both scientific and general. It is require only a fraction of the made possible by the availability filing space ... they are not sus- of Kodachrome Film in 35 mm. ceptible to breakage ... and, and Bantam sizes, and return of with the new Kodaslide Projec- the processed film in the form of tors, they provide both simplicity- individual transparencies in 2" x and effectiveness in showing. 2" cardboard mounts. Thus, any- Black-and-white transparen- one having a camera that will cies in 35 mm. and Bantam sizes accommodate Kodachrome in may be similarly mounted in either of these sizes can now Kodak Ready-Mounts. obtain full-color ready-for-pro- Detailed information about jection slides at the cost of the any phase of the Eastman 2" film only... less than 15 cents x 92" projection-slide program will per slide. be furnished on request.

This content downloaded from 130.132.123.28 on Thu, 1 May 2014 22:31:10 PMAll use subject to JSTOR Terms and Conditions

viii THlE SCIENTIFIC MONTHLY-ADVERTISEMENTS

Complete Equipment FOR

Explorers, Scientists, eng ineers, unters ad

and Travelers We Have Equipped Many

Expeditilons from the Poles to the Equator

Some of these exploring parties we equipped with practically everything they needed from engineering instruments to rifles, ammunition and food. Our tents, made of Equatorial Water- proof Cloth, have stood the sun of the tropics and the freezing blasts of the Polar regions.

Let us furnish estimates-write us your wants.

The Paulin System Altimeter The Paulin system is the first real improvement in instruments

of this type in over seventy years With a Paulin altimeter accurate surveys of elevations can be made with the minimum of

expense as to apparatus and labor. The Paulin method is particularly valuable for recon- naissance surveys. For example, an engineer who specializes in the placing of sewers makes his preliminary survey now by Paulin altimeter. Previously he used to send a man with an axe, another with a rod, and an instrument man with a level to make these surveys. Now he sends one man with a Paulin altimeter and has a recording barograph in his office or at the station from where his survey starts, to take care of variations of atmospheric pressure. By this method he can put in a bid in one-third the time and at one-ninth the cost of any other engineer using the level-and-rod method.

Two Army engineers made a survey of over one-thousand miles, each one using a Paulin altimeter. The method used was for one. of the men to stay at the station and after comparing watches the other officer started on his hike for a new station fifteen or twenty miles away. Every half hour he would stop and observe his altimeter, knowing that his comrade at station #1 was doing the same. When he arrived at station #2 he would make a final observation and stay over night. The following day he made observations of his altimeter every half hour. His comrade at station #1 would leave that station and march toward station #2 making his half hour observations during the march as his comrade had done the day before. On arriving at station #2 the two men would stay together over night. In the morning the first officer would start out again for station #3 and so the march would continue, each man alternately marching and stopping at the station until the work was completed. By this method one checked the other and the variation in barometric pressure was taken care of. It is needless to say that they made an excellent and accurate survey.

EASTERN REPRESENTATIVE: The Paulin Altimeter

the most accurate aneroid used for leveling by engilleers and geologists.

FIALA OUTFITS, Inc. ANTHONY FIALA, Pres.

10 Warren Street, New York City TELEPHONE CORTLANDT 7-4725 CABLE "AFIALA" NEW YORK

This content downloaded from 130.132.123.28 on Thu, 1 May 2014 22:31:10 PMAll use subject to JSTOR Terms and Conditions

AN EMERGENCY CONTACT The DOUBLE CLAMP with BINDING POST

In course of experimentation an immediate electrical contact withi the stand is frequently needed to complete a circuit.

Physiological and other apparatus set up with th'is clamp is prepar-ed for the emergency. The binding post with its specially tooled grip bites through enamel insulation, estab- lishing instant conduction.

A re-serve supply of, these clamps insures against the hazard of a flimsy, makeshift junction at critical times.

The clamping jaws take diameters from 14 mm. down to 1 MM., ais shown in the-above cut (actual size).

For details of clamps, stands, and recording instru~ments for teaching and research in the biological sciences, consult o'ur

The HARVARD APPARATUS COMPANY, Incorporated

Dover, Massachusetts

This content downloaded from 130.132.123.28 on Thu, 1 May 2014 22:31:10 PMAll use subject to JSTOR Terms and Conditions

NEW BOOKS____ New Revised Editions of a trilogy A complete explanation of the new of texts that provide complete ma- meter-kilogram-second system of terials for every aspect of the col- units to go into effect this year lege course in general chemistry

Principlof ML K S. Unityse m PernczjJe Dimensions and a I CeistryPrpsdl.K0.S

by JOEL R. HILDEBRAND osee M. K. O. S. The new FOURTH EDITION of this stand- ard text presents an unusually clear and thorough introduction to all basic chemical _mstem principles. Fuller descriptive material than in earlier editions is included, to assist the student in methods of study and to amplify by G. E. M. JAUNCEY & A. S. LANGSDORF information on techniques and applications. All material has been brought completely up This .anual explains the properties of the to date. $2.50 M. K. S. system adopted by the I. E. C. at

Scheveningen in 1935, describes the methods for changing from the C. G. S. system, gives reasons for the adoption of the ohm as the fourth basic unit, describes a proposed M. K. A C Lourse in 0. S. system of basic units, and discusses the difference between magnetic flux density and magnetic field strengt'h. All students and teachers of physics and electrical en- Gener* il Chemist*;*rvy gineering, research physicists, and practic- ing engineers will find this a most useful

by W. C. BRAY & W. M. LATIMER handbook. Ready January 23rd. $1.00 (probable) Completely revised for the new THIRD EDITION, this book contains an exception- ally well planned series of experiments and supervised study materials for the year's The first edition in English of the laboratory work, illustrating all funda- work of a precursor of modern mental concepts and procedures of general chemistry. Ample provision is made both Optics for the average and for the superior stu- dent. $1.60 7 The PHOTISMI DE | Reference Book of LUMINE ofA'JuurolycuS Inorganic (Shenm istry Translated with Introduction Inorg4~nic Chemisty by HENRY CREW by W.M. LATIMER & J. H. HILDEBRAND The work of Maurolycus, little known to English students, was the connecting link This book supplies the essential data on the between the ancient optics of Euclid and chem'stry of each element, combining the Ptolemy and the modern optics of Snell, thermodynamic and atomic structure in- Descartes and Newton. This translation, terpretations. Containing comprehensive including the notes added by Father Clavius, and up-to-date descriptive matter on both makes available one of the most interesting theory and industrial processes, the new historical works on this branch of science- SECOND EDITION provides valuable ref- an explanation of lenses, the optics of the erence material for teachers, students and human eye and spectacles written a century practicing chemists. Ready in February. before the beginning of modern physics. To $4.00 (probable) be ready in March. $3.00 (probable)

I ~MACaMILLAN9

This content downloaded from 130.132.123.28 on Thu, 1 May 2014 22:31:10 PMAll use subject to JSTOR Terms and Conditions