i REA i 
571 
American Chemist; Penn Monthly; Am. J. of Pharmacy ; 
Medical News; Academy of N. 8. Philadelphia; and Dr. 
Jarvis, of Dorchester, Mass. 
The death of Gen. George Gordon Meade, on the 6th in- 
stant, at Philadelphia, aged 56, was announced by Mr. Trego. 
On motion, Gen. A. A. Humphreys was appointed to pre- 
pare an obituary notice of the deceased. 
Mr. Gabb described the results he arrived at in making up 
a summary from tables of undoubted Miocene fossils, col- 
lected. by him during three years of exploration in Santo 
Domingo. These tables double the fauna hitherto de- 
scribed. Instead of the normal percentage of extinct to 
recent species according to Lyell’s formulas, it appears that 
the San Domingo Miocene holds 217 extinct and 97 living 
forms; these living forms existing on both sides of the 
present barrier of Central America, on top of which barrier 
lie Miocene rocks. Mr. Gabb stated that he had just. fin- 
ished the study of the Miocene Fossil Mollusea, collected 
during his recent geological examinations in Santo Domingo. 
He found 217 extinct species, and 97 which he recognized’ 
as living; 15 of these latter are peculiar to the “Panama 
Province,” having disappeared from the Caribbean waters 
since the Miocene period. One or two are found in the 
Eastern seas only, and others are now living on the opposite 
side of the Atlantic, or on the Atlantic coasts of North and 
South America; while still others are closely allied to-spe- 
‘ies or belong to genera only living at present in the seas of 
Australia and Southern Asia. 
The most interesting feature connected with these fossils, 
however, is that notwithstanding the proportion of  liv- 
ing to extinet forms is about one-third, yet, from the “ facies” 
of the collection, from the presence of antique types among 
the genera, and from the vertebrate remains, such as Car- 
charodon, Megalodon and other well-known Miocene species, 
there seems little doubt but that the formation was correctly 
referred to that age by previous writers, such as J.. Carrick 
Moore, Etheridge, and Duncan. 
Lyell established the rule many years ago, that the typi- 
