THE MICROSCOPE. 287 
A delightful study of animal life and character is contributed 
by Oliver Thorne Miller to the September Popular Science Month- 
dy, m the shave of a description of a pet lemur which the author 
possessed, and which represents a group of animals closely allied 
to the monkeys. 
The proceedings of the American Society of Microscopists for 
former years, and for the present one when issued, may be ob- 
tained from the treasurer and custodian, Mr. C. C. Mellor, of 
Pittsburgh, who will answer all communications and transact all 
business in connection with them. 
Rev. Francis Wolle, the accomplished author of “The Des- 
mids of the United States,’ and “ The Fresh-water Alge of the 
United States,” has an illustrated monograph on the Diatoms of 
North America in the course of preparation, with the proba- 
bility that it will be ready for publication within a year. 
It is said that Dr. Maliconico, of Naples, has discovered the 
microbe of old age. Now if some body will be kind enough to 
discover the microbe that shall kill the old age microbe, mix one 
or two of them with the Brown-Séquard elixir, and hypodermi- 
cally inject us all, the world will take on a new aspect. As it is 
things are getting exquisitely funny. 
Dr. Ferdinand Hueppe, of Wiesbaden, has. been appointed 
Professor of Hygiene at Prague. He is the sixth of Robert 
Koch’s pupils, says the Baltimore Medical Journal, who has been 
appointed to a professorship. The other five are Gaffky, of 
Giessen; Wolffhuegel, of Gottingen; Loeffler, of Greifswald; 
Gaertner, of Jena, and Berahard Fischer, of Kiel. 
Robert H. Lamborn has placed in the hands of Morris K. Jes- 
sup, of the American Museum of Natural History, New York, 
the sum of $200, to be paid in three prizes of $150, $30, and 
$20, for the three best essays on the destruction of mosquitoes 
and flies by other insects, It is suggested that the dragon fly is 
an active, voracious and harmless “mosquito hawk,” and that 
it might, if artificially multiplied, diminish the number of 
smaller insects. A practical plan is called for in the breeding of 
the dragon fly or other such destroyer in large numbers, and its 
use_in the larva, pupa or perfect state, for the destruction of mos- 
quitoes and flies in houses, cities and neighborhoods. 
