vi CONTENTS. 
ee vote Mineralogy.— Discovery of specimens of Maclurea cn) the a 
arnegat limesto Pe Sage Ne ke g, New Yo as R. P. WHI 
Sisne ‘aay of K Coa 32 227.—Recent Eruption of E Bin tna, Se 
Former ase nsion Seon of the South Aenea Contin ent, A. AGASSIZ, 230 
—Footprin n the Mesozoic rocks of New Jersey: Footprints from the Anthra- 
te Coal ant ures of the caged ee ii at the Ellangowan Colliery, 232. 
annie rous Pech of the Sierra N and California, oe 7. D. WHITNEY 
in ae via. » 235. Geology of Kansas: Geological site ot 
oo. ‘for oN Genera of F The Mosasaur, Leiodon anceps, 
of the American criacous 236. 
Botany.—Origin of the Flora of the suepes aa by J. Bau, 236.—The Nati 
Plants of Victoria semaci te “ fined, by F. von MvELLER, 237.—Influence of 
» Light on the Motions of Desmids, E. ‘STAHL: een of the Prothallus of 
z ewe 
Miscellaneous Scientific Intelligence. ‘ibe of the Catskill teombescee by A. Guy 
J. L. Campbell’s “Geology of Virginia:” To Astro: : Explorations ape 
Surveys in the Department of sey Missouri, 239. Ore rigin ge History of the 
Smithsonian Institution: Mode of Growth of Scaisierne H. J. CARPENTER: 
Mobius on Eozoon Canadense, 240, 
NTMBER CVL. 
Art. XXXV.—On Radiant Matter; by Wu LLIAM CROOKES, 241 
XXXVI.—Coincidence of the Bright Lines of the Oxygen 
+ Baki be Oi coe Lines in the Solar Spectrum; by 
ee 262 
XXXVI. Aas joi Densities of Peroxide of Nitrogen, Fo Formic 
Acid, Acetic Acid, and Perchloride of Phosphorus; by 
J. Wittarp Ginss, 277 
XXXVIII—The Fault at Rondont; by T. N. Daxx, Jr... 293 
XXXIX. or Composition of Amblygonite; by 8. L. 
MNP ee ree ee 
XL Superposiion of Glacial Drift upon Residuary ede 
Py W.d. MoGen,, 2 as Go os scas 2 Peo he 
sormnirtric INTELLIGENCE. 
Chemistry and Physics.—Theory of Fractional Dis 
tillation, THorPE: Solidifying 
point of Bromine, Puttiep, 304.—Thermic formation of Hydrogen silicide = 
_ of Ethyl silicate, OateR, 305.—Organic Ultramarine - 
of 
cant  Syctheeis ; 
¢ Benzene Ring, Von RIcHTER, vise —Sulpho-ethers off the Polyatomie 
methyl- 
Alcohols een the Carbohydrates, CLAESSO 
parar ‘Dalz and SCHORLEMMER, 307. —taieaion Balance, 308. 
Geology and ace History.—V olcanic Phenomena and Eart hoe — 1878, 
308.—Geology of the Diamantiferous Region of the Province of , Brazi 
i by 0. A. Derpy, Se fatvontine betas Gymnospermy of cena by L. 
Ssemng dco 31 L a American Botany, by 8. Watson, 313.— 
ni enezuelense: : Detieanaiie de Botanique, par M. H. Bat- 
10s. *, 316 —Miscellanea, 317. 
a aS of the soe of Mars for Oct. and Nov.. 1879, 317, 
é ericar pasrcetion, 318. — British Associa- 
ae stile CK, 3 
Kae 
4.2. Be 
