THE MICROSCOPE. 379 
CKNOWLEDGMENT. — Thanks are due to Miss M. A. 
Booth for a slide of Plumatella statoblasts, and one of the 
hair from an Indian bat, Phyllostoma diadema. Miss Booth is one 
of the most accomplished preparers of microscopic materials. 
Her name on the slide is a guarantee for its neatness and per- 
fection of finish. In the mount of Plumatella statoblasts the trans- 
parency of the annulus is complete and exquisite. From Dr E. 
Gray, of Benicia, Cal., we have received the remarkable seeds of 
Orthocarpus purpurascens ; from Mr Alfred Pell, a mounted slide of 
the loricee of two species of Anurea; from Mr Lewis Woolman a 
slide of the Atlantic City fossil Diatoms, and several admirable 
preparations from the Rev. F. B. Carter, of Montclair, N. J. 
E recently had a pleasant call from Mr Lewis Woolman 
the discoverer of the remarkable deposit of fossil Diatoms 
at Atlantic City, N. J. During the boring of an Artesian well 
these wonderful forms were found at a depth varying from four 
‘hundred to about seven hundred feet. Mr Woolman deserves 
great credit for his discovery and for the acumen that lead him 
to it. He will have his reward, if in no other way, at least in 
the consciousness of having discovered the most important col- 
lection of these magnificent plants since the finding of the fam- 
ous Santa Monica diatomaceous flotsam. 
R ALFRED PELL, of Highland Falls, N. Y., is compiling 
a list of the Rotifers which have been identified or dis™ 
covered in this country. Mr Pell will be glad to receive notes 
from any who are interested in the subject, with a list of their 
identifications or discoveries. The record will finally be pub- 
lished in THE Microscope. 
HE editorial waste-basket yearns for anonymous communi- 
cations, and the paper mill stands ready to devour them by 
day or by night. 
NEW PUBLICATIONS. 
A Text-Book oF ELemEentTARY Brotocy.—By R. J. Harvey 
Gibson, A. M. Illustrated with 192 engravings. New York: 
Longmans, Green & Co. 16mo., pp. viii., 362—The trouble with 
the majority of elementary text-books of science is that they 
