616 
ANATOMY AND PHYSIOLOGY. 
than two minutes, I have repeatedly seen the hitherto motion¬ 
less embryo alter its shape by contractions, become violently 
agitated, and burst out of its shell in the condition of a free 
swimming animalcule. Moreover (as I have elsewhere ob¬ 
served in relation to the general question of the dispersion 
and vitality of the germs of entozoa), it is worthy of remark 
that the eggs and larvse of Bilharzia soon perish in stale 
urine. “On the 16th of August, 1870, I placed about a 
thousand eggs in a quart of fountain-water, to which only a 
drachm or rather less of urine had been added. At the expi¬ 
ration of 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 matters of any kind. All sorts of reagents 
speedily killed the larvae. Mere discoloration by carmine- 
solution, or by the addition of a drop of the permanganate of 
potash in the form of Condy's fluid, instantly caused them to 
assume grotesque and unnatural shapes (Figs, n, q) ; death 
sooner or later following, as a result of the disintegration and 
resolution of their delicate bodies into minute sarcode-masses 
(Fig. m). Still more rapidly poisonous effects were produced 
by the addition of a little sherry or alcohol, even in solutions 
where the amount of spirit did not exceed one part of the 
latter, proof strength, to fifty parts of water ."—British 
Medical Journal. 
[To be continued.) 
BRITISH ASSOCIATION.—MEETING AT BRIGHTON. 
ANATOMY AND PHYSIOLOGY. 
President—Professor Bijrdon Sanderson. 
In opening his address, Air. B. Sanderson said—“ I should 
have been glad if it had been possible to have occupied the 
time in giving you a retrospective account of the progress of 
physiological research during the past year. I had intended 
to do so, but was led to abandon my intention on the ground 
that, although the work done has not been inconsiderable, 
we in England have taken very little part in it. If I had 
attempted the task, I should have been but chronicling the 
