RECENT VETERINARY LITERATURE. 
475 
cylinder of the central, undegenerated portion of the nerve 
fibre.” 
The Veterinarian (London, May) contains an interesting 
article on perforating wounds of the neck with rupture of the 
pneumogastric and sympathetic nerves. This case is especially 
interesting as the reported symptoms were referable mainly to 
the alimentary canal. Certain secondary symptoms appearing 
later involve the respiration and heart action. 
In the same number of this journal is reported a study by 
Hocke of the way in which the lesions of actinomyces spread. 
These conclusions may be briefly but rather imperfectly sum¬ 
marized as follows : (i) That there is a constant struggle 
between the leucocytes and the invading organism. In some 
cases the leucocytes seems to incorporate within itself filaments 
of the mycelium, and increase greatly in size. It may be so 
large that it is unable to reenter the blood stream. If the leu¬ 
cocyte succeeds in destroying the parasite, the leucocyte then 
returns to the normal dimensions and conditions, but in many 
cases the leucocytes are not victorious, and then become victims 
of the parasites which they attempt to destroy. Such leucocyte 
cells then die, but the actinomyces send out branches and con¬ 
tinue to develop, forming new colonies. The leucocyte or white 
blood cells in this way appear as active agents in spreading the 
infection. This explains the rather slow invasion of healthy 
tissue immediately bordering on the seat of original inoculation. 
Surgery taught by cinematograph, practically the French 
name for kinetoscope. Dr. Doyen, Paris, in a French scientific 
journal discusses his ideas and methods of teaching surgery by 
the use of these moving pictures, reproducing the operation as 
actually performed. In this way a very large number of students 
arepermitted to follow the operation very closely. An actual 
operation can be performed and then afterwards reviewed and 
fully discussed by the aid of this instrument. As a rule com¬ 
paratively few students are able to take actual part in critical 
operations or even to watch closely the various proceedings. 
The first illustration of the use of this instrument in teaching 
