vi CONTENTS. 
PAGE 
ARTHUR H. ELLIOTT. 
Contributions of Organic Chemistry to Modern Medicine................... 101 
ARTHUR HOLLICK. 
A Memorial of the late Dr. John I. Northrop... as se 
The Paleontology of the Cretaceous Fogdationto on a Plater Yelanties Reet.) 
OLIVER P. HUBBARD. 
Notes on the Discovery of Chloroform...... . 149 
HAROLD JACOBY. 
On the Reduction of Transit Observations by Least Squares............... 25 
The Rutherfurd Photographic Measures of the Group of the Pleiades... 41 
Report upon the Meeting of the National Academy of Sciences.......... 41 
The Rutherfurd Photographic Measures of the Stars about 8 Cygni..... 120 
JAMES F. KEMP. 
The Elaeolite Syenite near Beemerville, Sussex County, N. J............. 60 
Petrographical Notes ... 222.0. 2.. ss.sesnesqencos os 126 
JAMES F. KEMP AND VY. F. MARSTERS. 
The Trap Dikes in the Lake cs Pec and the Neighboring 
Adirondacks... siclhi Savjachiovs oot Se cesa's euabemessaniesscivesicr cas octane pe iteemmmnanE 
GEORGE F. KUNZ. 
Some Observations on the Opal Mines of Hungary and the Occurrence 
of Opal in Washington and Oregon ........... 32 
On the Origin of Garnets and Associated Miorinn in eee feat Dis- 
trict of Bohemia and Saxony .. a, 82 
Notes on the Minerals, Gems, and Ethnology of. fie eat Matin 
as Observed during a Recent Trip... ~ aay 
L. H. LAUDY. 
Recent Researches on the Solar Spectrum.. ~ 185 
J. T. MONELL AND C. R. MANN. 
Transit Factors for the Observatory of Columbia College ... 41 
HENRY F. OSBORN. 
The Evolution of the Horse..... . 107 
CHARLES 8. PROSSER. 
Notes on the Geology of Skunnemunk Mountain, Orange County, N. J. 132 
