1897 THE MICROSCOPE. 61 
QUESTIONS ANSWERED. 
SS eS 
Norz.—Dr. S. G. Shanks, of Albany, N Y., kindly consents to receive al, sorts of gues- 
tions relating to microscopy, whether asked by professionals or amateurs. Persons of at 
€ «des of experience, from the beginner upward, are welcome to the benefits of this deprr* 
ment. The questions are numbered for /uture reference. 
= ee eee 
Q. 249 Where can the following books be had? 1. Mic- 
roscopists’ Annual, referred to in Phin’s Practical Hints. 
2. John Mayall’s Cantor Lectures. 3. Andrew Ross, 
The Microscope. 4. Thos. Dick. The Telescope and 
Microscope.—H. L. W. 
A. Mayall costs ninety-five cents in paper. Ross costs 
seventy-tive cents in cloth. Dick costs fifty cents in 
boards. All may be ordered from Bausch and Lomb 
Optical Co., or from Philadelphia firms. 
The Telescope and Microscope, by Dick, is antiquated 
and not worth buying at this date. 
The International Scientist’s Directory, by S. E, Cas- 
sino, Publishers, Boston, Mass., Paper, $2.00, will give 
foreign addresses of scientists and of some dealers. 
Sica ENG E> G0 S/Silces 
Illusions of the Microscope.— While observing the great 
commotion in the medical world following the announce- 
ment of Dr. Koch’s discovery—commotion which may be 
likened to that produced by throwing a stone into a frog- 
pond—we note that physicians are divided into two camps, 
that of the Kochites and that of the anti-Kochites. For 
‘our own part we remainin the gallery a quiet observer, 
taking account of the phenomena as they develop. 
The end of it all is apparent enough: There will be a re- 
turn to vitalism, or, if you will, tothe Hippocratism of 
ancient days, the school of which dosimetry is an humble 
but convinced successor. Vainly dothe laboratories en- 
deavor to invade clinical medicine with their artificial, 
synthetical products. The medical world will finally em- 
ploy the alkaloids, the incitants of physiological changes, 
