( B ) 
chronic inflammation set np by the warbles in the skin, 
which extends to the connective tissues, thence to the flesh, 
producing the straw-coloured jelly-like appearance of a newly 
slaughtered carcase of beef, which in twelve or twenty-four 
hours, when exposed to the air, turns a dirty greenish yellow 
colour, and thus spoils the beef, having a frothy discharge 
oozing from the surface, with a soapy-like look.” .... 
With regard to this altered material which has to be 
scraped away, Mr. John Child, Manager of the Leeds and 
District Hide, Skin, and Fat Co., wrote me on the 3rd of 
July:—“In the worst part of the warble season I could get 
you bucketsful of inflamed tissue (commonly called by the 
butchers, ‘jelly’), cut and scraped from the carcase after the 
hide is taken off. The formation of this matter must be a 
great drain on the health, condition, and quality of the 
animal, and must be a great loss to somebody.” 
About the middle of Juty, Mr. Child forwarded me a mass 
of this inflamed tissue or “jelly” obtained from the animal 
whilst in the process of dressing, so that the material was 
taken both from the hide and the carcase at the same time, 
and as warble maggots were present in it the specimen was a 
very perfect example, because the cause of the evil (namely, 
the maggots) were there plainly to be seen, as well as the 
damage they had caused. This mass I forwarded, by his kind 
permission, to Mr. John Penbertliy, Prof, of Pathology at the 
Royal Veterinary College, Camden Town, N.W., requesting him 
to tell me the nature of the so-called “jelly,” and the cause 
of the diseased condition, to which Prof. Penberthy replied :— 
“ I have made an examination of the -specimen sent. The 
so-called ‘jelly’ is the product of inflammation, and there is 
everv reason for believing that this inflammation is due to the 
warbles. In the small portion of material received there were 
three apparently healthy warbles, evidence of two others in a 
decomposing condition, and three cavities where other warbles 
had been lodged. The material is not fit for human con¬ 
sumption. I think it very deleterious to the health and 
comfort of the affected animal.” 
On the 19th of July, in reply to my request that he would 
tell me by what name the diseased tissue should be described, 
Prof. Penberthy wrote as follows :—“I should call the material 
inflammatory product in the subcutaneoustissue. Inflammatory 
product is made up of constituents of blood exuded through 
vessel-walls which have been damaged. It is allowed by some 
pathologists that inflammation, too, may excite growth of the 
cells previously existing in the part. The dark red colouring 
is most likely due to escape of blood from small vessels which 
