CONTENTS OF VOLUME VII. 
— 7 OO 
NUMBER XXXVIL 
Pa 
Arr. [—Indian Mounds and Skulls in ee Results of 
Explorations of Mr. Henry Gillman; by Jerrrres Wyman, 1 
IL—Silt Analyses - Foner 3 Soils and Sabsoi Is; by 
Budsnxz W, Hineann, oo 9 
IU. 20a the Distr ‘bution of Soil Ingredients among the Sed 
ments obtained in Silt Analysis; by R. H. Lo CUHEIDEE, 17 
IV.—On the Influence of Strength of Acid and Time o 
gestion in the Extraction of Soils; by R. H. Louearmer, 20 
V.—On a new form of Cathetometer; by WiruamM Grunow, 23 
VI.—Notes on the Geology of Western Lom: near the thirty- 
second parallel; by Watrrer P. JENNEY,... --.------ 25 
VIL—On the Formation of the Lignite ‘Bade of the — 
Mountain region; by L. LesquEeREUX, - 29 
VITL—On rem aan of Land Plants in the Lower. Silurian ; by 
de EMBQUBRBUN 2 ccc eee ee 31 
IX.—On a Cou aston of Silver Chloride with Mercuric 
Iodide; by M. Carry Lra, -- 34 
X.—Results of recent Dredging Expeditions o on the Coast of 
NewEngland, No.4; by A ERR 8 
XI.—Note on Fossil Woods from British Polambia, collected 
y Mr. Richardson; by Principal Dawson,. --- - - 7 
XIL—On the Structure and Affinities of the Brontotheride ; : 
©. C. Maren: (With two Piston) os 81 
SCIENTIFIC INTELLIGENCE. 
hemistry and Physics —On the Vapor-density of Pota ; Drrt- 
MAR, 51.—On the Hydrocarbons p ed by the solution of cast-iron in acids 
C N: On the She poate properties of Cyme different sources, 
GLADSTONE, 52.—On the Constitution of the Allyl compounds, U 
Rinne: On Brazilin and Resorcin, EMILE —On the thesis of an 
Isomer of Urie acid, MULDER, he Condensation of Gases and Liquids 
'y Wood-charcoal, by M. Mr.sens, 56.—Rapidity of Detonation, ABEL 
Brown, 57.—Heat generated by the absorption . hy ho dé platinum black, 
M. Favre, 58.—A new Thermo-Electrie Battery, \. see 
Geology and Natural History — Decomposition = ‘ryan eats by T. SrerRy 
Honr. 60. poner Survey of Missouri, L PuMPELLY, Director, 61.— 
any, by SmRENO Warsow 63. thas acters of New Ferns from Mexico, by 
Dantet ©. Eaton: Botanical Contributions, by ASA GRAY, 64.—Y 
Aida Donax in View wa: Tricho omanes radicans in Kentucky, 65.—Flora Aus- 
traliensis, by Gxo. KeNTHAM: Flora Brasiliensis: Musée Botanique de Leide, par 
W.F. R.SuRisGar: DeCandolle’s Prodromus, pars decima septima, 66.—Deserip- 
tion of a new Genus and Species of Aleyonoid Polyp, by R. E. C. STEARNS, 68. 
Astronomy —Rapporti sulle Osservazioni dell’ Eclisse totale di Sole, del 22 Dicem- 
_ bre, 1870, beg 
Mi 
tific Intelligence-—Note on Subterranean Fishes in California, by 
AW. C CHASE: La Naturaleza, Periodico cienti®co de la Sociedad Mexicana de- = 
Historia ag 74.—Notes on a Metallurgical Journey in Europe, by JonN — 
A. CHURCH, 75.—Qualitative Chemical Analysis; by Stas H. Doveiass Lass and — 
ALBERT 3 The Service Monthly: Museum of . ve 
es Cam sabres Mass.: Walker Prize of the Boston Society of Natural History, 
16.—Cave at Knetowi: Berks Co., Pa.: Aurora Australis, 77.— Obituary. —Louis 
ph Agassiz, 77. —Dr. Karl Friedrich rich Naumann, 80. 
