*Jo"uSiJlTfi86^^^^ PROGRESS OF MICROSCOPICAL SCIENCE. 123 
its histological sketch is very good. Those who wish to know how 
much of the anatomy of the kidney has been worked out, and 
how much remains for elucidation, should consult it. 
HandbucJi der Physiologisclien Botanik, in verbindung mit A. de Bary, 
Th. Irmish, und I. Sachs. Herausgegeben von Willi. Hofmeister, 
Erster Band. Zweite abtheilung mit 134 Holzschnitten. Leipzig : 
Engelman, 1868. — This part of Herr Hofmeister's fine work has 
been recently issued, and will well repay those who examine it. 
It gives us a number of illustrations with which English students 
are little familiar, and its chapters on the development of buds 
are of considerable importance. Indeed the part now issued deals 
almost exclusively vfith this subject. 
PKOGKESS OF MICKOSCOPICAL SCIENCE. 
The Cholera Fungus. — The Reports of Drs. Lewis and Cunningham 
on the interviews with Professors Pettenkofer, De Bary, and Hallier, 
as recently published in ' The Lancet,' are of the highest interest not 
only to the student of Pathology but also to the Microscopist. It 
would be impossible within the space allotted to our " Record " to give 
even a summary of all the results, as indeed the epitomized form 
in which they are published in ' The Lancet ' occupies some fourteen 
or fifteen columns ; but as Professor Hallier's conclusions have already 
been controverted in Dr. Thudicum's paper in our last number, we 
think it is only fair to quote that portion of Dr. Cunningham's and 
Lewis' " Report" which relates to the interview with the Jena Professor. 
The experiments of Professor De Bary are also of some importance, 
and should be referred to by our readers. The reporters thus describe 
Professor Hallier's method of conducting his researches and the con- 
clusions at which he arrives. 
I. Apparatus loMch Professor Hallier employs. — These are generally 
rather complex, as Professor Hallier's method of observation depends 
for the value of its results on the supposition that isolation is as per- 
fectly secured as possible. 
1. The large apparatus, as describe4 in his " Gahrungs-Erschein- 
ungen : " * — It consists of a glass flask, fitted with two tubes, one of 
which is connected with the isolating media, whilst the other enters 
the receiver of a small air-pump, by means of which any amount of 
air can be drawn through the whole apparatus. He thinks that, if it 
were possible (i. e. if a sufficient number were at hand), only this kind 
should be used. He considers its great advantages to lie : 1st. In its 
being as perfect an isolator as is possible to be obtained without 
resorting to great expense. 2nd. In its affording means for the supj^ly 
of as much ajr as may be thought necessary. 3rd. In enabling the 
material cultivated to be used in considerable amount, which he con- 
* P. 14. 
