120 
REVIEW. 
rise to serious disease. We do not here speak of the 
contents of the first half or “ book/’ which deals with 
human parasites, except so far to say that our author has 
paid the fullest possible attention to the “ measles 55 or 
cysticerci which give rise to the beef, pork, and mutton 
tapeworms in man. In this connection Dr. Cobbold has 
given an account of the important researches of Professor 
Perroncito and other Italian investigators. The recent 
opinions of M. Megnin respecting the polymorphism of the 
cestodes is not so much as touched upon; partly, we under¬ 
stand, because the eminent French veterinarian had not 
fully developed his extraordinary views when Dr. Cobbold 
was engaged on the work, and partly because our author 
has freely expressed the opinion that such views as M. 
Megnin holds are altogether unworthy of serious con¬ 
sideration. We regret that our respected Vienna con¬ 
temporary should give M. Megnin’s views the promi¬ 
nence assigned to them in recent numbers. (See M. 
Megnin's Neue Beobaclitungen uber die Entwicklung und 
die Metamorphosen der Taenia bei Sciugethieren , as translated 
from the French by the accomplished editor, Alois Koch, 
and given in the Revue fur Thierheilkunde und Thierzucht 
for January, 1880.) 
The work before us, whilst omitting all practically useless 
anatomical details, gives great attention to the internal 
parasites that occasion epidemics, such as those of rot, 
husk, trichinias, strongyle affections, the cestode helmin¬ 
thiasis affecting Welsh mountain ponies, olulaniasis, the 
tapeworm disorder of cats, gapes, grouse-disease, and so 
forth. In the matter of human and veterinary sanitary 
science the author has taken pains to explain the facts that 
have reference to the means of preventing the spread ot 
parasitic affections. In some cases he has shown how such 
diseases might be effectually stamped out. 
As we said before, it is not for us to offer a direct opinion 
as to the merits of Dr. Cobbold’s book, but as comparatively 
few of our readers have access to the medical journals, we 
invite attention to a selection of passages from their ' 
columns. 
In an exhaustive leader (in which the Lancet for Decem¬ 
ber £7th, 1879, reviewed the scientific advances of medicine 
and surgery during the last year) our leading medical journal 
remarks that the appearance of “ the octavo volume on 
‘ Parasites of Man and Animals' constitutes a notable event 
in the history alike of medicine and natural history, and is 
a noble monument to the devotion and enthusiasm of its 
