478 Hinman— Volumetric Determinations by Chromic Acid. 
species occurs in Bermuda, the West Indies, and on the coast 
of Brazil. 
Chilichthys Spengleri (Bloch) Goode. A single individual 
was taken by Vinal N. Edwards at Wood’s Holl, in August, 
1877. A West Indian and Madeiran form. 
Lactophrys trigonus (Linn.) Poey. Ten or twelve individuals 
were taken at Wood’s Holl, 1877. The species has only once 
before (in 1838) been taken north of Florida. 
Art, L1.—Volumetrie Determinations by Chromic Acid; by 
C. W. H N. 
for chromic acid in estimating the quantity of sulphuric acid 
in drinking water. 
