Feology and Mineralogy. 153 
A short distance from Dr. Abbott’s house and very near where 
the Trenton gravel joins the marine gravel, there is a deep gully 
through which flows a small brook. In this gully the gravel bank 
1s constantly washing away and presenting new surface a 
fter a heavy rain in June, 1879, I visited the spot with Dr. 
Abbott and his son. Here I noticed a small boulder of about six 
or eight inches in diameter, projecting an inch or two from the 
face of the bank, about four feet from the surface of the soil 
above ; I worked the stone from the gravel in which it was firmly 
imbedded and drew it out. At the back part of the cavity thus 
made I noticed the one end of a stone, and after working it 
up and down a few times, so as ae loosen the gravel about it, I 
drew out the eh oat now exhibi 
On the same day I discovered a ee specimen in place, eight 
feet from the surface, and Dr. Abbott’s son Richard found another 
about four feet from the surface. These three specimens were 
found within twenty or thirty feet of each other, after a heavy 
=~ had made the roa favorable conditions for ‘their discovery. 
8 show Be he ; seldom the smplemenis are likely to be found, 
ae it may be’ from this cause that some unsuccessful hunters 
have doubted the occurrence of the implements in the gravel. 
- Certainly the evidence that has been brought forward to-night 
will clear away all doubts as to the importance and reliability of 
Dr. Abbott’s discoveries and investigations, which shave proved 
a sie existence of paleolithic man in the valley of the 
e 
Hat. 6 pp. 8v 
29, a Albany, 1881. This paper is an abstract of the section 
on ’Bryozoans of the Upper Helderberg and Hamilton beds in the 
Thirty-third Report na the State Museum of N pee daatagd 
fos 
ings of the Academy of Natural Sciences of Philadelphia for the 
years st and 1881. 
- Cambarus primevus, a Cray fish, from the Lower Tertiary 
Se ‘a Western Wyoming; by . Pa nae Bae Jr., with a plate. 
U. S. Geol. and Geogr. Surv ey under F. V. Hayden. Vol. 
S 
8. American Museum of Natural History tsa far Park, New 
York). Bulletin No. 1.—This first number of the Bulletin of the 
American Maas contains three handsomely illustrated and 
Sadak yee by the paleontologist of the Museum, Mr. Wurr- 
FIELD—On a new Crinoid from Burlington, lowa; On Dictyophy- 
ton and new allied forms from the Keokuk beds; and Observa- 
