CONTENTS. 
Pag 
Art. L  Gapraistiog of New York Moraines with Raised — : 
Beaches of Lake Erie; by F. Livererr__---- Aa ee aL <3 
IJ.—Compounds containing Lead and extra Iodine; by 
ES WeEsel enc ok oe ee eee eee 21 
II.—Estimation of the Halogens in Mixed Silver Salts; Py 
EF. A. Goocn.and G.\ FAIRBANKS 2212 2 eee ee DY 
IV.—Pitch Lake of Trinidad; by 8. F. PEcknam 
V.—Determination of Selenious Acid by Potassium Perman- 
ganate; by F. A. Goocu and C. F. Cremons ak) 64 
— ee ee ee 
VI.—Some Reptilian Remains from the Triassic of Northern 
California; by J.-C, Murriam. 2... 25 ¢s22 eee eee 
ViL—Further Contribution to our knowledge of the Lau- 
rentian; by F. D. Apams. . (With Plates I and II).... 58 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics—Correction to the paper on Argon, Prout’s Hypothesis 
and the Periodic Law, E. A. Hitu: Porosity of solid bodies for the Light 
Ether, ZEHNDER, 70.—Wave length of the Ultra Violet lines Aluminium, C. 
RUNGE: Electrical Resonance, V. BJERKNES, 71. 
Geology and Mineralogy—Geological Survey of Michigan, 71.—Geological and 
~Natural History Survey of Minnesota, 72.—Doctorate Theses in Geology, 73.— | 
The Laccolitic Mountain Groups of Colorado, Utah and Arizona, W. Cross: — 
Petrographical Sketch of Aegina and Methana, H. 8. Wasuineton: Geologische 
und geographische Experimente, E. Reyer, 74.—New locality for Xenotime, 
Monazite, etc., on Manhattan Island, W. Niven: Brief notices of some recently 
described minerals, 75.—Note on a Garnet from California, F. W. CLARKE, 76. 
—Physikalische Krystallographie und Hinleitung in die krystallographische 
Kenntniss der wichtigeren Substanzen, P. Grora, 77. 
Botany—Die naturlichen Pflanzenfamilien : Familiar Flowers of Field and Gar- u 
den, FS. Matuews, 78. 
Miscellaneous Scientific Intelligence—Cambridge Natural History, vol. iii; . 
Molluses by A. H. CoOKE: American Association for the Advancement of 
Science, 79. os 
Obituary—JOSEPH GRANVILLE Norwoop, M.D., LL.D., 79: 
