THE MICROSCOPE. Aug 
tion so relieved the pain that he was willing to havea sec- 
ond piece of flesh cut out March 17th. This contained 
embryos with beginning capsule formation. Some of this 
muscle was fed to two white rats to see the effect on them. 
Other trichinous meat was got from Dr. Salmon and fed 
to other rats and guinea pigs to determine the path of 
migration of the embryos and the changes in infected mus- 
cle fibres. No results have been reported. 
The blood was examined Mar. 10, the result showing 
4,230,000 red cells per c.mm., hemoglobin 74 per cent and 
8,000 leucocytes per c.mm. 
Brown in “Studies on Trichinosis’”’ at Johns Hopkins 
Hospital, in April, 1897 found as high as 68 per cent of 
eosinophiles with corresponding decrease of polymorpho- 
nuclear neutrophiles to 6.6 per cent. 
Of 1,267,329 hogs examined by the Bureau of Animal 
Industry for export during the year ending June 30, 1892, 
over 2 percent or 25,899 were pronounced trichinous. 
Prof. E. L. Mark, of Harvard, examined over 3,000 hogs 
raised near Boston from 1883 to 1888 and found 13 per cent 
to be trichinous. Of 234 slaughtered in Mass. for use in 
state institutions nearly 18 per cent were trichinous. 
In the past 33 years 357 cases of trichinosis have been 
reported in American Medical journals. Of these 243 
recovered, 80 died—a mortality of about one in four. A 
paper on tho subject by Dr. Packard from which these 
facts are taken is printed in the Chicago Journal for July 
10, 1897. 
PRACTICAL SUGGESTIONS. 
By L. A. WILLSON, 
CLEVELAND, OHIO. 
Ringing Mounts.—The name of mediums for ringing 
mounts is legion, but none gives neater or more satisfac- 
tory results than liquid shellac. Dissolve the shellac in 
naphtha and use without further admixture of any kind. 
Mounting Small Insects.—Small insects hardly need 
soaking in caustic potash, as turpentine or oil of cloves 
