CONTENTS. Vv 
Page 
rca —Chemical Composition of Triphylite; by 8. L. Pzy- 
MLD, 5. oe Sick Sos os eck kom widiewe Oe aes olen 226 
XXVIII —Mesozoic Strata of Virginia; by W. M. Fonrainz, 229 
XXIX.—Recent additions to the Marine Fauna of the eastern 
coast of North America; by A. MORI oe 239 
e of the Laramie Group or ihe Mountain Lig- 
nitie i cnnsGan: by H. MB Amsrer ig io a in aint cnn ee 
SCIENTIFIC INTELLIGEN OR, 
ee sind ited Bogemicia nu Silica, and on an Inorganic membrane formed 
it, ULLIK: Action o: ype rus Oxide on nnyiee, MULDER and BREMER, 
24 46. 2 ecRnmatttd of B or: " Haeeme: n of af Sider acid 
on Ethylene dibromide, DEMoLE, 247.—Relative ABinities of et and th 
Haloid Blements, 248, —The Part | of Acids i in Etherifica geo 249.—P 
Lines Previn 
Nat of Spectra | of Mixed Gases, J. WIEDEMANN, “250,—The Law of the Tele. 
phon 
Geology and Natural Histor —-Reports upon the Specimens obtained from borings 
made in 1874, between the Missi yd River and Lake Borgne, at wo site 
proiined for an outlet for Flood Waters, E. W. = 
252.—The Question of the Gonidia of Tina 4 4,—Etudes Phyoologigues, 
URET and E. BorNet, 256.—Note on the ETE. of the coi 
Rhynchonella, B. E. - Mons, 257.—Fauna Littoralis Norvegie, J. rebar and 
ped ath Plc met on cae E S. P. LANGLEY, 259. 
us Scientific Intell Earthquake of November 18, 1878, 260.— 
Pocativugen auf dem Gebieted pa ; erosieneah, E. WouLyy: The American 
Journal of Otology, 2 
NUMBER C. 
Art. XXXI.—Dr. Jacob Bigelow; - 2: -s-s« ess t= 5-5 F o- 263 
XXXII.—The Vertebrx of Recent Birds; 5 by O. C. Marsu,. 266 
XXXIIL—Notice of Gaston de Saporta’s Work, The Plants 
ie ee ise, before the advent of Man; by Lzo Lzs- 
oak mass cet cae gh ON ESE 
clined ee a dial 
Balti 
Undergro man Temperatures on the Comstock Lode; wie 
ate chines te ‘Geoiouy of the Fortieth Par 
allel. Reviewed by R. PuMPELLY,------------------- 
XXXVIL—On a Method of Hecimatng wats = of 
Young’ 8 Revert Layer; FER, ---~- --- 303 
XXXVIII—The Lo wer ioe of ’ Urolophoante by H. F. 
Osnorn and F. Spxtr, Jr., -- ~ << 4 804 
XXXIX.—Notice of recent Additions to the “Marine Fauna 
of the Eastern coast of North America; by A. E. VERRILL, $98 
XL.—The Presence of Chlorine in Scapolites ; y F. D. Apams, 31 
