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VOLUME 42. 
Rozrnson, B. L.— Studies in the Eupatorieae: (I.) Revision of ti Genus Pi queria» (IT.) 
Revision of the Genus Ophryosporus ; (III. ” “st a nus us Helogyne and ity eee ie 4 
at . Brees. 4, y h have 
iagnoses and Synonymy 
Classed with chiens DP. 
1-48. May, 1 50c. 
Sanne, W. C. — Architectural Acoustics: eri ) Introduction ; (dL) ) The Accuracy of anne 
Taste in regard to Architectural Acoustics ; I.) Variatio: on in Reverberation with Var: 
tion in Pitch. pp. 49-84. Jun 
Peirce, B. O. — On the Peroabitity sind the Retentiveness of a Mass of Fine Tron bd mas 
pp. ‘85-91. June, 1906. 7 
Perrce, B. O.— On the Length of the Ti f Contact in the Case of a Quick Tap on a alee 
graph Key. pp. 93-100. son 3 ie : 
Manx, E. L., and Corznanp, M. — eles in the Spermatogenesis of ‘the roe Bee. 
Hoae, J. L. — Friction and Force gan ne Transpiration as Dependent on Pressure in Gases. 
pp. 113-146. Siok 1906, 
, B. O. — he Conditions to be Satisfied if the Sums of the kia, acta Members 
of Two Pairs. = Orton Functions of Two Variables are to be Themselves Ortho series 
pp. 147-157. July, 1906. 15c. : 
—On thse Correction. for the Effect of the Counter Electromotive Force induced 
in a 5 Meohaa Coil Galvanometer when the Instrument is used Ballistically.. Pp. 159-169. 
tig 1906. 
B. 0. —A Bim mple Device for Measuring the Defiections of a Mirror Galvanometer. 
pp. PL. 1 y July, 1906. 15¢. 
Rivpte, L. W. —On the Gpeiieay of the Entomophthoraceae. pp. 175-197.. 3 pls. August, 
1 
Baxter, G. P. — A Revision of the ‘dtunte Weight of Bromine. pp. 199-214. August, 1906. 
25c 
Larnange, A. P.—The Optic Chiasma of Teleosts: A Study of Tihexttagse, pp. 215-231. 
. Be. 
FI 
Woon, R. W. u “te and Magnetic Rotation Spectra of Sodium Vapor, and their Analy- 
sis. pp. 233-260. 5 pls. November, 1 65c. 
Rorcu 5 5 — Results of ae Franco-American Expedition to Explore the Ataperys in the 
é 1906. 20c. 
KEnnewiy, A. E.— An Approximate Law of Fatigue in the Speeds of Racing Animals. 
pp. 273-331. December, 1906. $1.15. 
Cong, L. J. — An Experimental Study of the Image-Forming Powers of Various Types of Eyes. 
pp. 3383-417. January, 1907. $1.10. 
Sairn, A. W. — xpansion and eereiray of Ether and of Alcohol in the Neighborhood 
of their Boiling Points. pp. 419-460. January, 1907. 60c. 
oo E. D.— The ifn of Bermuda. pp. 461-485. January, 1907. 4c. 
BLackMAN, M. W. — The permatogenesis of the adit as (V.) On the Spermatocytes of 
-Lithobius. pp. wor 2pls. February, 1 
Moorg, A. H. — Revision of the Genus a pp. 519-569. March, 1907. 60c. 
RicHarps, T. W., and Messrs. HENDERSON and FREvERT. — Concerning the Adiabatic oe 
mination of the Heats of Combustion a Gaetan Substances, especially Sugar and Benz 
pp. 571-593. pend 1907. 35c. 
, E. H., and Mess rs. CAMPBELL, SERviss, and CHURCHILL. —On t e Thomson Effect and 
"the Temperature Coefficient of psa sat Conductivity in Soft Iron Soe 115° and 204°C, 
Pp. March, 1907. 
Marx, E. L. — as Electric Wetuke for Use in Reconstructions. pp. 627-636. March, 1967. 
Hexpznson, EE ~— Concerning Position Isomerism and Heats of Combustion. pp. 637-647. 
March, 1907. 
Lowe, P. — Temperatirs of Mars, A Determination of the Solar Heat Received. pp. 649- 
667. eer 1907. 25. 
ee M. — The Transmission of Réntgen Rays henbu Metallic Sheets. pp. 669-697. 
pril, 1907 
ocess of Building up the Voltag do i Sed send Alternating- 
~ 2Be. 
Sanger, C. R., and Greson, J. A. — The De heal ination of Small ‘Amounts of Antimony by the 
Berzelius-Marsh Process, a 717-733. 1 pl: May, 1907. 
Reco ings; Bi 
; Officers and Committees : List of Fellows and 
Foreign Honorary Pak ‘Statutes ek aad Standing Votes, etc. 
(Continued on page 2 of Cover.) 
