906 Tur Microscope. 
formerly, about the ‘conflict of science and religion, and we cannot 
disguise the fact that there is a conflict, deep and earnest, ofttimes 
sore; but it is a conflict again between the new and the old—not 
of truth or about truth, but of men’s changed ideas of truth. 
Among those whose business it is to deal with the therapeutics 
of disease, we find more and more of the younger men intelligently 
accepting the bacterial etiology of disease. 
By the time that these become in general, as they now are in 
hopeful part, the professors in the colleges, students will have no 
further hesitation in believing their senses and in adopting the tes- 
timony of trustworthy experts. 
It would carry me too far to attempt to detail here, even for a 
single case, the convincing and indisputable proofs that bacteria 
do cause disease, neither is it necessary in this presence, for among 
those whose inclinations and opportunities have lead to the satisfy - 
ing use of the microscope, and to the examination of the abund- 
ant literature connected therewith, there is no doubt upon the sub- 
ject, there is no need of a repetition of the evidence. 
(To be continued.) 
Tracks oF [nsEcTs SIMULATING VEGETABLE ImpREssIoN.—Zeil- 
ler has found impressions in the Oxford clay at Villers sur-mer,— 
which are hardly distinguishable from those of plants,—but which 
have undoubtedly been made by insects. These insects must have 
made galleries in the soil 0.015 m. in diameter, and 0,005 m. deep 
parallel to the surface and branching repeatedly in a series of gal- 
leries, which lead off from the main gallery alternately to the right 
and left at an acute angle. The insect producing these was prob- 
ably a mole-cricket, Gryllotalpa vulgaris ; the resemblance is re- 
markably close to the undoubted impression of conifers belonging 
to the genus Brachyphyllum.—Jr. R. M. Society. 
STERILIZING FLurps FoR Hypopgrmic Usr-— According to the 
Therapeutic Gazette, the sterilization of fluids for hypodermic injec- 
tions has been investigated by two observers, independently of each 
other. These are M. Limousin, of Paris, and Dr. Friedlander, of 
Berlin ; the process used in each case being similar, i. e. the fluids are 
placed in little glass balloons having an elongated neck, (similar 
we should imagine from the description to the small glass pearls of 
nitrite of amyl,) which are heated and sealed in the oxyhydrogen 
flame. When employed, the neck of the balloon is broken, and 
