494 . 
ON SEWAGE AND PARASITES. 
dated to their new circumstances. The six great natural 
history regions show how such natural barriers as high moun- 
tain chains and wide or deep seas had isolated them. The 
facts he had laid before them showed how natural science, 
out of the tangled skein of creation, had been enabled to dis- 
cover the plan and purpose of the Creator in His works. 
They should remember that Infinity and Eternity were His 
characteristic attributes, and should, therefore, be prepared to 
expect the same qualities in His works. Surely, such a broad 
ground on which to study His omnipotence and omnipresence 
was a better, more reverent, and, therefore, a more religious 
view than the narrow conceptions which a limited knowledge 
had hitherto caused them to hold. Simplicity of plan and 
unity of design, like silver threads, ran through and connected 
the whole universe of God . — Mark Lane Express and Agri- 
cultural Journal. 
ON SEWAGE AND PARASITES, ESPECIALLY IN RELATION 
TO THE DISPERSION AND VITALITY OP THE GERMS 
OP ENTOZOA. 
By T. Spencer Cobbold. M.D., &c. 
( Continued from p. 359.) 
Omitting, purposely, a multitude of interesting details, I 
am bound to add some other particulars; the more so, per- 
haps, because the results were so much at variance with my 
expectations. Thus, the strength and vigour of the escaped 
larvae appeared to depend upon the relative quantity and 
purity of the water in which the larvae were immersed. In 
weakly diluted urine they soon perished, and even also in 
water where only a small quantity of decomposed vegetable 
or animal matters had been introduced. On August 16th I 
placed about 1000 eggs in a quart of clean water, in which 
less than a drachm of urine had been likewise added. In 
forty-eight hours not a single living embryo could be found. 
In fact, I subsequently ascertained that I could not keep the 
embryos alive for twenty-four hours in any water in which I 
had accidentally or otherwise introduced the smallest trace 
of mucus, blood-corpuscles, urinary crystals, or decomposing 
