HELMINTHE^. 6ll 
The l’6st of the pamphlet is occupied with aii ^(icount of two 
new anthelmintics. 
Darstellung der Lehre von den Trichinen, mit HiicMcht auf* die 
dadurch gebotenen Vorsichtsmaassregeln, fiir Laien nnd 
Aerzte. By Dr. Rudolf Virchow. Berlin, 1864. 8vo 
(pp. 64, with five #oodcuts and a coloured plate). 
This hrocliut^, as the title indicates, professes to be neither 
more nor les^ than a popular exposition of oUr knowledge of the 
origin and development of the Trichina, specially intended to 
suggest precautionary measures in view of the lielmiTithiasis, or 
so-called fleshworm endemic disease, which results from the 
migration of the young in large numbers. As might naturally 
be expected from so distinguished an authority, it is a ^^state- 
ment which may be perused with profit by most naturalists. 
It not only contains a’ brief resume of the labours of helmintho- 
logists generally, iii this relation, but also some account of the 
author’s oWn experiences. Thus, referring to his original expe- 
riments, Virchow says (p. 11) : — 
In a dog to which I had administered encapsuled but living 
Trichime from the human body, I found, at the expiration of 
only three and a half days after th6 feeding, numerous free and 
well-formed Trichinae in the intestine, which, moreover, had 
acquired perfect sexual development. I could recognize male 
aiid female animals, and in their bodies I found numerous eggs 
and spermatozoa. My first communications on this head were 
made at the meeting of the Society for Scientific Medicine at 
Berlin on the 1st of August, 1859 (Deutsche Klinik, 1859, S.430j 
Compt. Rend, de TAcad. des Sciences, tom. xlix. p. 660), and 
subsequently in my Archives (Archiv fiir pathol. Anat. und 
Physiol. Bd. xviii. S.342). I showed, at the same time, that 
the capsule, in which the animal was found enclosed in the flesh, 
could be none other than an altered muscular fibre, a degene- 
rated primitive fasciculus, and likewise that the animals must 
forcibly enter itito the particular structural elements of the 
flesh.” 
We have quoted this passage with the especial view of fixing 
the date of this early Trichina-experiment, which was very soon 
confirmed in its results by the more extended researches of 
other investigators. No one has done more justice to other 
Workers than Virchow himself, as may be shown by the multi- 
tudinous deferences with which his little pamphlet abounds. 
The accompanying plate, though rather coarse, gives a highly 
characteristic view of the muscle-Trichina in the living, non- 
encysted condition. 
An Essay on Trichinosis or Fleshworm Disease, its Prevention 
and Cure. By Julius Altiiaus, M.D., M.R.C.P. Lon- 
2 r2 
