KLEIN AND PASTEUR. 313 
scopical analysis the analyst should not be guided ie the zumber 
of the organisms, so much as by their character although the 
field of Fig. 75 is nearly as full as that of Fig. 76 we should 
imagine that chemically the former water would be much the better 
of the two, and it should be once for all known that some living 
organisms are only to be found in the purest water, so that the 
simple finding of ‘‘ moving organisms” is not by any means a sign 
that such water is unfit for drinking purposes. 
It is folly to think of improving our water supply while house 
cisterns are so ill attended to; some householders never think for 
a moment that their cistern should ever be cleaned out. The 
writer has seen some awful conditions of these reservoirs, dark 
and dirty, contaminated by dead birds, 
mice, and even cats, in a pleasant state 
of putrefaction, covered with masses of 
fungi, aquatic worms of all kinds mov- 
ing amongst the filaments of conferva 
found growing upon sides of the cistern. 
Fig. 77 exhibits the character of the 
residue from a water of this kind taken 
from a “ Filtre Rapide” after much con- 
centration, and it is hoped that the 
Wa.cr taken from Cistern . 
perusal of these few remarks will tend deca anpieur acer tp fou we 
nadre 
Pr WI oh A 
to dispel the notion that because organ- wet Semen nnn Smee, 7 
Sigma, pe 
etarshaped bodies > 
isms exist in the water, that water must "<"SvulsceTery tin'ae S14 ttn arm) ac 
necessarily be unwholesome ; to teach Vig. 77. 
us that organisms do not usually exist in immense quantities in 
small quantities of water; and that cisterns sometimes require 
cleaning out. 
KLEIN AND PASTEUR. 
\HE recent “Supplement” to the “ Report of the Local Govern- 
ment Board for 1881-2” will be valued not only by all who 
take an interest in the germ theory of disease, but by all students 
of micro-biology (and, it may be added, by all serious students of 
cryptogamic botany), specially on account of the paper by Dr. Klein 
on “The Relation of Pathogenic to Septic Bacteria” which it con- 
tains. The delay in the publication of this official account of 
Klein’s researches has, no doubt, to some extent, been due to the 
length of time required for the preparation of the beautiful plates 
with which this and the other papers in the “Supplement” are 
illustrated. Few can look at these plates and doubt that in the 
