44 THE MICROSCOPE. 
Atems, 
To Mount Po.ven.—If small and transparent—dry. If 
opaque, in essential oil of lemon or glycerine. 
Microscopists will hear with regret of the death, in his eighty- 
fifth year, of Mr. Hugh Powell, of the firm of Powell & Lealand, 
opticians. 
M. Pasteur has proved that the burial of diseased animals does 
not destroy the germs of disease, or obviate the chance of infection 
to any animals who may afterwards feed on the ground above where 
the body of the diseased animal was buried.—Sczence. 
The existence of a micrococcus of pneumonia has been con- 
firmed by Professor Carl Friedlander, of Berlin, who has cultivated 
these organisms and produced croupous pneumonia by inoculating 
them in dogs and mice. 
A SUBSTITUTE FOR A ReEvOLVING. TaBpLe.—Cover of stout 
oil-cloth to a small table with a round top, drawn underneath the 
table by strings like the mouth of a bag: the “cover will then re- 
volve with the greatest ease even when it has a considerable weight 
upon it.” —Sc7-Gosszd. 
To Mount Moss.—For permanent mounting glycerine jelly is 
preferable. Rimmington’s is very pure and well made. “Immerse 
the moss in clean water, exactly as it is desired to mount it, quickly 
transfer to a clean slip, on which is dropped a little jelly sufficiently 
heated to melt it; place on the cover, and there will be no difficulty 
in making a good mount, which can be finished off with rings of 
gold size, and kept as long as desired.”’ 
In a report to the Paris Academy of Sciences, the French 
physiologists, MM. Chambrelen and Malassez, announce that they 
have at length succeeded in discovering, in the milk of cows affected 
with inflammation of the spleen, the bacillus of that disease. They 
have been successful in their experiments in the reproduction of 
this micro-organism, and in inoculating animals with it. 
MountTInc Insect OrcGaAns, Erc.—Soak in liq. pot. for a day, 
or longer, if large. Wash and lay out upon the slip, arrange, and 
gently press while in the water with another slip. Remove to weak 
