Pe 
CONTENTS OF VOLUME XIX. 
NUMBER CIX. 
Arr. I—Inequalities of the Moon’s Motion . aap by the ieee 
Oblateness of the Earth; by J. N. Srockwmtt,.-.. ..-- 1 
II. ia oe for ; aee Liege Currents ; 
ILL 0 
Til. —&, K. Gilbert Report « on the Geology of the Henry 
Mountai Fabby ee ee us, 7 
IV. Direction ‘Function of the Liver: Disposal o ‘of Waste; ; 
b Oowen) oc) Sue gee ee 
V. arpa bas Phenomena; by W. G. Lxvison, -.-...--- 29 
VI.—New Forms of Fossil Crustaceans from the Upper De- 
Saini Rocks of Ohio; by . WHITFIELD, - 33 
VII.—Optical Method for the Measurement of High “Temper- 
atures 5 : 6 ae Ge Sats oh so bmn oie 42 
VIIT. 5 Explorations i in the Wappinger Valley Limestone of 
Dutchess Coun cua Y. Calciferous as well as Trenton 
Fossils in the inger Limestone at Roch le — 
Deke locality “ Newburgh, N. Y.; by W. B. Dw 50 
IX.—First Results from a new Diffraction Ruling Engine! ty 
. A. Rocrrs, - ee ok es ee am ee a 
x, Solar Parallax from the Velocity of Light; by D.P. Topp, 59 
XI.—New Characters of Mosasauroid Reptiles ; by O. 
alia Cee sia GAA Were Ue rs So 83 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics.—Alloys of Gallium with Aluminum, so apaca 03 Vol- 
atility of P Platinum i in Chlorine, SEELHEIM, 65.—Preparation of the Acetic ethers 
of Polyatomic Alcohols, FRANCHIMONT: Relation between Molecular ieabractlve 
Bettas and Chemica] Constitution, BRUHL, 66.—New method for preparing 
Hydrobromie and driodie acids, BRUYLANTS: Thermo-chemistry, THOMSEN, 
68 — New Standard of Light, ScHwENDLER, 69.—Electrie Light, ScHWENDLER, 
- —Blectro-magnetic rotation of the Plane of Polarization in Gases, Kunpt and 
ONTGEN, 71. 
Geoogy i — History.—Hudson River fossil plant from Maryland, J. P. 
LEsury, 71. nnsylvania Second Geological sigh 72.—Geological Survey 
of San Salvador: A Manual of Paleontology, for the use of Students, H. A. 
NICHOLSON, 73.—Dana’s Manual of Geology: Catalogue of Official Reports upon 
Geological AMIE F. Prime, 74: Classification and Descriptio = the American 
Species of Characez, B, D. Haustep: Untersuchungen iiber d likerne der 
Thallophyten, F. ScuMrrz, "75.—Le Charbon de l'Oignon ordinaire, M. Cornu: 
Bntwickelongezosehichte einiger Rostpilze, T. ScHROETER: Botanical Necrology 
the year 1879, 76. 
Miscstise cs Scientific Intelligence.—Geological Survey of the Public Domain, 78. 
—A Handbook of Double sng 81.—Double Star Observations made in 1877- 
78 at Chicago. 8. W. Burn : Solar — and Heat, Z. ALLEN, 82.— : 
~—Professor B. F. Mudge: Feba Johnston, 82 
