44 THE IMPROVEMENT 
is the best application of frog-pressure which the veterinary 
surgeon possesses. 
The question started by Mr. W. Henderson, as to the con¬ 
nexion of occasional attacks of spasmodic colic with soundness, 
is a new and interesting one. 
The paper of Mr. Karkeek, on the External Causes of Disease, 
abounds with interest; and his communication on the effect of 
the hydriodate of potash in removing glandular enlargements, 
will rank among the recent and not the least valuable innova¬ 
tions in veterinary practice. We would suggest, and we speak 
here from repeated experience, the use of this drug in cases of 
phthisis, whether in the horse, the cow, or the dog. We have 
seen beneficial effects from it, which exceeded our most san¬ 
guine expectations. This, however, will, at some future time, 
form the subject of a lengthened communication; in the mean 
time, we entreat our readers to make trial of it in every case in 
which they suspect tuberculated lungs. A communication of the 
effect produced will be gratefully received. 
The cases of the unusual retention of the foetus in a cow, and 
of singular rupture of the uterus in the same animal, by Messrs. 
King, are original and instructive. 
The introductory lecture of Mr. Percivall will be read with 
much interest; and in his communication on scarlatina, he has 
made an addition to our increasing list of diseases. 
M. Prevost gives a graphic delineation of that unacknow¬ 
ledged but frequent disease, the cramp in horses. 
Mr. Pritchard, in his concluding paper on the diseases of the 
heart, is original and correct. There are several analogous sub¬ 
jects worthy of his pen. 
Some light has been thrown on the subject of rabies. Mr. 
Baker’s account of the symptoms in sheep was a desideratum. 
The fact of the communication of rabies by the saliva of a cow, 
is all-important. Dr. Gaetani’s theory of the non-contagious¬ 
ness of communicated rabies, and the usual exciting cause of 
this disease, are stated at considerable length. 
The rot in sheep has also received much original illustration 
by the account given of it on the banks of the Nile, by M. 
Hamont. Although differing essentially from him as to his 
theory of the disease, we have derived much valuable informa- 
