iv CONTENTS. 
N UMBER LXXXVI. 
Arr. her —Photometric comparison of Light of aitrdny | 
colores by U.N. eon, (25. eon ae 81 ' 
IX.—Echinoid fauna of Braz il; by Ricnarp Ratu : 82 : 
X. Stiga sin Aa in the tail of Coggia’s Cosas, ae | 
Sve eee ee ee ee 84 
XI. = Suede extinction of the light of a Solar Protuberance; | 
L. Trou 85 
eer) Reger Seta Ng He es elon bal Rati a 
and its relation to tae force find vital liesit S, LuContrs, 99 
XV.—Revision of the Atomic Weight of Antimony ; by 
Jostan P. Coo KE, Jr. (concluded), --__.._. - 1 
X VI.—Two new species of Primordial Fossils; ; by! S. W, Foro, 124 
XVIL—N Note on mailed colata; by. 
XVIII. 
; byS. W. Fo RD, 129 
XIX. —Schweitzer’s “New Aid Ammen Sulphates ; “ge by 
HNSON and R. H. Currrenpen, -.__ .-.--__ 2. 131 
XX, = Poplar of North America ; by SERENO Watson, ---. 135 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics.—Viquefaction of Oxygen, M. Raout Pictet, 137.—Lique- 
faction of Oxygen, ehh ee and Hydrogen, 141.—Liquefaction ‘of Rewyiene, 
Nitrogen 
ioxide, and obebly Marsh gas, (LLETET, 142.—Flame-tempera- 
s ETT M um Wor'! E ‘ — n 
ealled Idryl, GOLDscHMIEpDT, —Determination of Nitrogen in Nitroglycerin, 
Laur a R: Aromatic Hydantoins, Sc , 145.—Behavior of Be 
acid in the Organism of Birds, Jarre: Le Sage’s Theo eory of Gravitation, J. 
Crout, 146.—Thermal Conduetivity and Diathermancy of Air and H ydrogen, H. 
Burr, 147. “Se Sacre of the Electric Spark in compressed gases, Cazin and 
Wiruxer, 14 
and Mi ebay La —Silurian tbe by Leo LEsQUEREUX: Modified dri 
New Hatioate © y W. UPHAM, 1 mig vse das Krvstallsystem aa die Winkel 
des Glimmers, von N. v. Sproles : Die Glimmergru 
FELD, 153.—Beitrage zur Bntvwickelungsgeschichte de “aor — by E. Stan.: 
Acetabularia Mediterraneanea, by A. DE BARY E. STRASBURGER, 155.— 
Entwickelh hichte reat Prothalliums von Cvddeneene leptophylla, by 
K. GorpeL: New Species of Parasitic ey : by E. P. cee 
Transpiration in Plants: Japanese Lingula an ds, E. 
ig iets ae = Le aa ey i eee le 2 eR ee eR ee oe 
Rr TT a5 oN OPN SO Re R RG e ye EE ee eS Ty Re eas ree 
S. Morsg, 
—The American Naturalist: Bulletin of the r uttall Ornithological Club: 3 eae 
foie “the me 158. 
Meteors observed in Cambridge, Mass.: Prize for the discovery of 
> Oana 158. —Index posta tp a and Sombie relating to Nebule and 
Clusters, &c.. ly E. i tae 
Miscellaneous Scienti, —teephon in England, 159.—Manual of Heat- 
ing and Ventilation, Peng comme esmerism, Spiri , ete., historically 
Se a by W. B. CarPENTER: The Telephone : Auguste 
os de la Rive, 160.— Rhumkorff, 160. 
RSE ce ot oe a P eamey UE ea ay ™ Pate mene Sears 
