336 Tin American Geologist. November, 1893 
This name is given to a cylindrical or sack-like sponge whose wall is 
composed of unusually large and rhombic meshes, features distinguish- 
ing it from Protospongia, Cyathospongia and Dictyospongia. In the 
spicular structure sj far as made known there are few distinctive dif- 
ferences from the genera named. 
Sur le Rouvilligraptus Richardsoni de Cabrieres; by Charles Bar- 
kois. (Ann. de la Soc. Geol. du Nord, vol. xxi, p. 107, 1893). 
Prof. Barrois has identified in Cabrieres the Canadian (Quebec) 
species Graptolithus richardsoni Hall, and proposes to designate it by 
the generic term Rouvilligraptus. 
Surface Geology >>f New Jersey, Report of Progress, 1892. By Rol- 
lin D. Salisbury, pp. :!.'?-l(i(>, with two plates, maps of eskers near 
Ramsey's in Bergen county, and nine figures in the text. (Prom the 
Annual Report of the Geol. Survey of N. J., Trenton, 1893.) 
Four months of last year were spent by Prof. Salisbury and several 
assistants in the detailed examination of the glacial drift and associated 
deposits of a considerable part of northern New Jersey, which are here 
described, with explanations of their origin so far as they seem to be 
determined at the present stage of the work. The report begins with 
a section devoted to definitions and the criteria for discrimination of the 
several varieties of glacial and modified drift. Outside the well defined 
terminal moraine, which was traced across the state by Cook and 
Smock, much true glacial drift or till is found in many places to a dis- 
tance of several miles, occurring in general most abundantly near the 
moraine. At greater distances, to nearly twenty miles, it sometimes 
exists in patches which are completely separated from each other. The 
isolation of these areas of till is regarded as the result of subaerial de- 
nudation, giving evidence of a much greater amount and longer period 
of erosion than the moraine and the drift sheet north of it. Scattered 
boulders are found on many tracts beyond the moraine where other 
drift deposits are very scanty or wholly absent. 
Eskers or osars, which had not before been reported in New Jersey, 
were discovered in several localities. In the vicinity of Ramsey's, close 
to the northern boundary of the state, and about a dozen miles west of 
the Hudson river, a somewhat complex system of eskers has been 
mapped by Prof. G. E. Culver, who finds them associated with north to 
south belts of stratified valley drift of which they constitute a part. 
Karnes, or short gravel ridges, knobs and hillocks, are far more common; 
and kame areas, or markedly undulating and knolly tracts of sand and 
gravel, 'occur in many places, chiefly in valleys or on low land, and in 
some cases south of the terminal moraine. Other formations of modi- 
fied drift which have an extensive development are overwash plains 
from the front of the moraine, and terraces and plains along the princi- 
pal valleys, the latter including the well known Trenton gravels. All 
these deposits are unhesitatingly ascribed to streams flowing from the 
ice-sheet. Whether the land was more depressed than now in its rela- 
