vi CONTENTS. 
THOMAS L. CASEY. 
PAGE 
Coleopterological Notices, No, 11. (fitte)s. 0. c's sinun alee eee 2 
FRANK M. CHAPMAN. 
The Origin of the Avefauna of the Bahamas.............. ....06. 54 
HAROLD JACOBY. 
On the Calculation of Star Places for Zenith Telescope Observations 86 
The United States Eclipse Expedition to West Africa, 1889-90..... 47 
A. A, JULIEN. 
On the Microbe of Phosphorescent Wood..... ........000+ seceees 387 
GEORGE F. KUNZ, 
The Discovery of Diamonds at Plum Creek, Rock Elm es 
Pearce Co., Wik. el lesacens Gensccweee 49 
The Discovery of Fire Opals near Whelan, Wash... ..... «02+. «« 50 
The Phosphorescence of the Diamond after Exposure to Sunlight, 
andvalso by Friction |... 4 <s.i<c, sds leprae ae eee 50 
On some New and Interesting Occurrences of Mineralsand Precious 
Stones in the United States.............00..s-000s rao erie tts 56 
L. H, LAUDY. 
Adaptation of the Arc Light to Projections,..... ...........t..e-- 103 
Electric Meters............ syeraveigie o(sio = oyeleicebels/otoreeiatele hata kerene tiie: tekstas 118 
A. R. LEDOUX. 
Notes on the Sweet Grass Hills of Montana and the Kootenai Mines 
Of British Columbia s.)c..cis. «Gp «dc see nvcee aioe oe 57 
A. R. LEEDS. 
The Discovery of a Starch-digesting Ferment in Cow’s Milk, and its 
Relation to Nutrition... sic. 3. © *. olsiisit aad a wae eee ee 66 
The Precipitation of Suspended Silt and Clay in River Waters:.,,: 66 
W. GOOLD LEVISON. 
Note on an Economical Zinc Element for Bunsen Batteries..... .. 114 
Note on Photomicrographs from Photographs of Lightning........ 114 
J. S. NEWBERRY. 
On the Geological Age and Relations of the Potomac Group of Vir- 
ginia and Maryland. . 
