xxxvi 
.naturalists’ quarterly advertiser. 
NOTICE TO MICROSCOPISTS. 
We have prepared for us, by an Experienced Microscopist, 
packages of Material for Mounting, containing Marine Alga?, 
Zoophytes, Eight different kinds of Recent Diatoms, Sam¬ 
ples of four well known and desirable Diatomaceous De¬ 
posits, Foraminifera, Ferns and various other very interesting 
objects. These packages consist of about twenty-live smaller 
packages, each containing as much material as a person would 
wish to use of the kind. 
* The diatoms* are put up in small packages, each containing 
diatoms sufficient for a good cleaning. 
We have also, for the benefit of such of our patrons as 
are specially interested in diatoms, some packages consisting 
entirely of diatomaceous material. We give below a list of 
the latter, such as are contained in our regular packages, but 
can furnish other kinds if desired many of them quite rare. 
Diatoms in Situ. 
Isthmia nervosa. Synedra superba. 
Khabdonema Adriaticum. 
Samples one-half of a dozen mixed marine gatherings from Long 
Island Sound. These gatherings contain many fine species and are ex¬ 
cellent material for selecting particular forms from, as well as for mount¬ 
ing in a mixed condition. 
Brackish Water Forms from Long Island Sound. 
Diatoms . 
Coconema cymbiforme, Fragilaria virescens, 
Tabellaria flocculoca, Khabdonema Adriaticum, 
Pleurosigma Balticum, “ aclananthes, 
“ strigilis, Navicula Lyra and Westii, 
and various other test diatoms. 
Recent diatoms from Iowa; Diatoms from Connecticut River (Synedra 
ulna, splendeus, etc.); Diatoms from Springfield Mass. Water Supply 
(meridion, circulare, etc.) : Cocconeis scutellum. 
Diatomaceous Earths. 
Skire, Jutland ; Morris Co., N. J.; Santa Monica, California. (Campy- 
lidiscus clypens and Navicula rostrata.) 
The above are our regular diatom packages. 
PRICE PER PACKAGE $1.25. 
We have also small packages of diatoms which we can sell 
for 10 cents each and packages of Spores and Elaters of 
Hepaticse, Conocephalus conicus and Equisetum arvenae, at 
the same rate. 
