342 NOTE ON THE PRESERVATION OF SOME INFUSORIA, 
soria by the sweet spirits of nitre. Accordingly I procured from the 
ponds at the mouth of the Humber, west of Toronto, some slips of 
Anacharis and of Chara. On a portion of the latter, I was fortunate 
enough to discover a few active and finely developed Megalotrocha 
albo flavicans, and four of Floscularia ornata—these latter, June 27, 
1863. Placing a couple of the Megalotrocha which were on the end 
of the Chara stem on a glass slide, with a drop of clear water, by 
means of a camel’s hair pencil sweet spirits of nitre was added. At 
first it seemed to cause the active little creature to shrink, but in a 
moment or two it threw out its prettily arched oral extremity and . 
displayed its ciliated frimged lappets. A little camphorated water 
with creosote, and which had been filtered through chalk, was allowed 
to insinuate itself under the glass cover, and the specin.en sealed with 
black varnish. It is still in good preservation, bemg put up now for 
some time. Floscularia was not preserved as a permanent specimen. 
I beg also to add a list of animalculee which I have as yet found at 
the Humber, and in the Island ponds, Toronto. 
Amoeba princeps, in same place with small green sponges. 
Micrasterias Boryana. 
Enastrum rota. 
Desmidium hexaceros. 
Staurastrum paradoxum. 
Stentor caeruleus. 
Vorticella convallaria. 
Leucophrys patula. 
Kolpoda cucullus. 
Paramecium aurelia. 
Megalotrocha albo flavicans. 
Floscularia ornata. 
Oxytricha gibba. 
Chilodon cucullus. 
Rotifer vulgaris. 
Staurastrum alternans. 
Fragillaria capucina. 
Gomphonema truncatum. ~ 
Cocconema lanceolatum. 
The above list has been determined from Pritchard’s work, and L 
hope will be found correct. 
