237 
rarely been found. They represent quite a variety of species, 
and probably several genera; and bear a very close resem- 
blance to the small teeth related to Galeocerdo, Notidanus, 
ete., from the Tertiary marls of New Jersey. 
Dr. A. Haset exhibited a vial containing a Red-Colored 
Liquid looking like blood. This he obtained at a place in 
Honduras, known as the Fuentes de Sangre, or Spring of 
Blood. This substance issues from the roof of a cave eight 
feet high, four feet wide and ten feet deep, occurring in a bed 
of Trachyte on the bank of a small stream. The mouth of 
the cave is in the face of the high bank, and the only way of 
access is by descending the cliff, by means of roots of the 
trees and shrubs which clothe it. When fresh, this liquid 
has much of the appearance of blood, and dogs and fowls will 
lick it from the floor. There is still another locality of this 
substance in Ecuador. The substance was referred to Prof. 
Edwards for Microscopic examination and Dr. Schweitzer for 
Chemical analysis. 
May 15th, 1871. 
The President in the chair. Twenty-two persons present. 
Dr. L. FeucHTwanGer exhibited two specimens of a 
fossil, showing both sides of an Archegosaurus medius, from 
the coal formation of Germany. 
The President, Dr. J. S. NEwBErRRY, said that this specimen 
of a rare fossil was of considerable interest, and showed the 
characters of the creature in a very perfect manner. This 
literally “primeval lizard,” as its name denoted, was a 
reptile peculiar to the carboniferous era, and has been consid- 
ered by several Palzeontologists, more particularly Owen and 
Goldfuss, to be nearly allied to the existing Proteus, Lepidosi- 
ren and other Pleurobranchiate reptiles now living. Agassiz, 
PROC. LYC. NAT. HIST., N. Y.—Vou. IL. 16. 
