e 
= 
(Continued from page 3 of Cover.) 
‘ 
VOLUME 42. 
Rosmsox, B. L.— Studies in the Eupatorigae: (I.) Revision of the Genus Piqueria; (II.) 
vision of the Genus Ophryosporus ; (111. ) The Genus Helogyne and its Synonyms; (IV. ) 
Diagnoses and Synonymy of Eupatorieae and of Certain Other Compositae which have been 
Classed with them. pp. 1-48. May, 
Sazine, W. C. — Architectural snemusion i et Tobvodeeticn > (II.) The Accuracy of Musical 
Taste in regard to Architectural Acoustics; (III.) Variation in Reverberation with Varia- 
tion in Pitch. pp. 49-84. June, 1906. 
B. O. — On the Permeability and the Retentiveness of a Mass of Fine Iron Particles, 
pp. wa vans. 1906. 15c. 
— On t T 
ath ot tha i. to ie ee oe ae 
of a Quick Tap on a Tele- 
a. Koy. _ 93-100. om, 1906. 
, E. L., and CoPELAnp, st Sia puas tahoe in the Spermatogenesis of the Honey Bee. 
pp. jek. 1pl. June, 1 
Hoae, J. L. — Friction and ahi ‘das Pa Transpiration as Dependent on Pressure in Gases. 
a 113-146, July, 1906. 
m ps Conditions to be Satisfied if the Sums of the Corresponding Members 
of Two Pairs of Orthogonal Functions of Two Variables are to be Themselves Orthogon nal, 
pp. sri July, 1906. 15c.. 
— On the Correction for the Effect of the Counter Electromotive Force induced 
ina re Coil Galvanometer.when the Instrument is used Ballistically. pp. 159-169. 
July, 1906. 
z, B. O.—A Bim mple Deyice for Measuring the Deflections of ‘a Mirror Galvanometer. 
pp. 171-174. 1 ig! Paap 1906. 1 
Ripprg, L. W.—On the Cytology of the Entomophthoraceae. pp. 175-197. 3 pls. August, 
pe G. P. — A Revision of the Atomic Weight of Bromine. pp. 199-214. August, 1906. 
A. P. —The Optic Chiasma of Teleosts : A Study of Inheritance. pp. 215-231. 
25c. 
a Spectra of Sodium Vapor, and their Analy- 
ee ls, November, 1906, 
a of the Franco-American ne to Explore the Atmosphere in the 
20c. : 
ee pp. 61-272. Deo ecember, 1906 
%, WE —An Approximate law of Fatigue in the Speeds of Racing Animals. 
rede December, 1906. $1.15. 
Oiege ‘ J.—An sberimental Study of the Image-Forming Powers of Various Types of Eyes- 
pp. 333-417. January, 1 
fA 
-10, 
an Expansion and Compress of Ether and of Alcohol in the Neighborhood 
- 419-460, 1907. 60c. 
January, 1907. 
' nesis of the Myriapods. (V.) On the geste of 
par Cages pp. 487-518, 2pls. Febru: 1907. 
RE, A. H. — Revision of the Genus as Spllanthes. pp. 519-569. March, 1907, 60c. 
