re a 
Tuer MIcROSCOPE. 285 
for it at Mount Hamilton, will be the largest instrument of the kind 
in the world. It is understood that the lenses have been success- 
fully cast, and only need polishing to be ready for use. In looking 
through this telescope it is reckoned that the moon will be brought 
within thirty miles of the earth, and that discoveries will be made 
on that planet to solve problems that have heretofore been held to 
be unsolvable. 
AN amusing brochure reviewing the work of M. Pasteur has 
recently appeared in France. It is entitled ‘‘ Microbe-culture, or 
the Art of becoming a Millionaire by means of a Scientific Hoax.” 
The author is Dr. Marron. 
_ Ar the last meeting of the Southern Dental Association, Dr. 
EK. §. Chisholm read a paper on the importance of the occular de- 
monstrations the microscope affords of the histological conditions 
of tooth structure as an element in determining the pathological 
conditions in the etiology of the decay of the human teeth.—Arch 
of Dentistry. 
AccorpinG to Prof. Vogel, plants do not always contain their 
characteristic alkaloids when grown under other than natural con- 
ditions. Hemlock does not yield coniine in Scotland, and cinchona 
plants are nearly free from quinine when grown in hot-houses. 
Tannin is found in the greatest quantity in trees which have had 
a full supply of direct sunlight.—Med. News. 
Dr. F. L. JAmers is giving a valuable post-graduate course 
in microscopical technology in his St. Louis Medical and Surgical 
Journal. The instruction given is more practical and useful than 
that to be found in any text book, and is the outcome of a long 
and successful experience with the microscope. We hope to see 
these articles republished in a more convenient form later on. 
Writers in the English Mechanic have been at loggerheads 
over the relative merits and costs of English and foreign micro- 
scopes. A few individuals condemn everything un-English—but 
the majority agree, that the best foreign makes are fully up to the 
English standard. The time has come when Americans need no 
longer go abroad for their stands and lenses—for no better or more 
accurate work is turned out anywhere than by our own manufac- 
turers. 
