151 
January 16, 1871. 
The President in the chair. Nineteen persons present. 
The President, Dr. J. S. NEWBERRY, read a letter from 
Mr. J. C. Brevoort, announcing the receipt of Prof. Poey’s 
paper on the Percoid Fishes of the Island of Cuba for publication 
in the Annals of the Lyceum. The paper would occupy the 
space of a full number of the annals and as it was written in 
French it was desirable that it should be published as writ- 
ten without translation. Mr. Brevoort wrote that if the 
Lyceum would consent to such a course he would defray the 
expenses of publication. Mr. Brevoort’s generous offer was 
unanimously accepted and Prof. Poey’s valuable paper 
ordered to be published in the Annals. 
Dr. L. FEUCHTWANGER exhibited several fine specimens 
of Cuprite, from Cornwall, England, crystallized in cubes. 
This mineral is a Red Oxide of Copper, and the specimens 
exhibited consisted of large crystals of a rich, deep red 
color and subtransparent. Occasionally isolated crystals of 
this mineral are found an inch in diameter imbedded in 
Lithomarge, but they are generally changed upon the outside 
to Malachite. When found in large quantities it constitutes 
a valuable ore of Copper. 
He also exhibited a number of specimens of Pearls, which 
were of interest on account of their peculiar external struc- 
ture. Some of them were of the ordinary kind, smooth and 
exhibiting the brilliant play of colors found in these 
substances, but most of them were brownish in color, oval in 
shape or resembling two acorns attached base to base as 
there was a raised ring around the middle part which was 
commonly of a dark almost black color. 
Pror. A. M. Epwarps remarked that these pearls were 
of interest as the genesis of those substances was not 
thoroughly understood, although considerable had been writ- 
ten on the subject. Dr. Feuchtwanger had presented him 
with some of them and he would take the opportunity of 
