INDEX TO VOLUME XXI* 
peace in! dark heat rays, 236. 
of colorless liquids, 500 
Reddy ‘National, list of papers, "84, 
Natural Sciences Philadelphia, Pro- 
ceedings of, 8 
Acid, carbonic, of iro sae 401. 
chlor-hypon 
nitric, ignition my, por 
sacchari 
sclebeuid 
tropic, — is of, 139, 4 
Actinic balance, angley, | 
Agassiz, , Chun’ n’s Ctenophoree 
ing by sonst 
“Wnugteleae of, Fg, 144, 
Blake, 328. 
Air, results of analyses of, 83. 
Alaska, no tes on 
rner, C, A. " Puenavivesen ee 
arcnesieet ing © 415. 
oirs of, 335. 
Atropine, 4 
B 
—— S. F., Report of Fish Commission, 
Bailey, L. W., Geology of Southern New 
Bruns wick, 
Barker, G. F, chemical abstracts, 66, 
136, '232, 321, whi 498. 
Barometric pressu e, Hazen, 361, 
Barrois, C., Hall's. ‘Devonian pr of 
New York, 44. 
Bauermann, i, Systematic paatiiaitaagel Pr 
506. 
Becker, G. F., SS _ Nature, 510. 
uerel, H., tory pola 
ization of Hone 
Bell, A. G., production of sound by 
— energy, 463, 
yr. lh 4a 2 
pares se notes on Cyperaces, 412. 
n Orchidex, 412. 
Behring | Strait, notes on, Dall, 104 
Berthelot, mercuric fulminate, 235 
metallic chlorides, 
rnitric eee 398. 
Birds, South a 
Blake, W. P., cine and orpiment in 
Blood-erystals and their coloring matter, 
Bolton, 4 C., organic acids in examina- 
tion of m inerals, 80. 
Bornet, E., Rak nes 508. 
Bosnia, Herze a, geology of, 409. 
Botan 
Cedar - spples, 332. 
Eucalypto, graphia, 249. 
Gymnosporangia, Farlow, 332. 
Movements of plants, 245. 
OLO 
D. L., idee of Buenos 
set , galvanometer for pow- 
395." 
Braithwaite, iy ibe ort: 329, 
Bricks, mineral fr 
Brombfoem a irect reed aie of, 236 
Bruhl, J. W., relations mbit molecu. 
lar structure and re ve pow 0. 
Brush, ork ie seth gers 
Socioty ‘a "Natural are 338, 
Building stones, durability of, 4 
amphor, nay er of with alcohol, 400. 
Carney, ., ice at high temperatures, 
H. J., Carboniferous sponge- 
