476 INOCULATION FOR PLEURO-PNEUMONIA IN CATTLE. 
took some, secured it between two pieces of glass, and gave it me. He 
also inoculated two cows with it to show me the manner of operating.” 
Thus we see that when these cows were inoculated it was 
“ bon virus ” so good that we were presented with some of it, 
to bring home for use on the cattle of England ; but when 
one of these self-same cows (for it is not said that both of 
them were inoculated on September J st, and therefore 
possibly not with the same material) contracted the disease 
of Pleuro-pneumonia, then it was ee virulent matter” “ pus ( not 
lymph)” We have more notes in our memorandum-book, 
and will produce one, as possibly it may refer to the other 
cow mentioned in the foregoing extract as being “ inoculated 
during September last/’ 
“ Sept. 9. — Saw two cows at Willems, sen.’s, with gangrene of their 
tails, or rather of the stumps, their tails having been amputated high up. 
They were inoculated with serous fluid expressed from a diseased lung. 
The fluid is said not to have been good , but yet twenty more cows were in- 
oculated with the same material. These cows are reported to have done 
well. Doubtless one of these animals will die ; the superior part of the 
stump, labia, and adjacent parts are gangrenous. A portion of gan- 
grenous skin was sliced off by Dr. Willems, who said, with emphasis, in 
answer to my question, that the virus it contained was tres-bon. When 
asked again if it was not charged with gangrenous materials, l Non, non ,’ 
was the reply I considered this skin such a treasure that I 
begged a bit of it, and carefully packed it up in the MM. Willems’ 
presence.” 
In taking leave of this question we wish again to record 
our regret that we should have been compelled to give par- 
ticulars in extenso which we had carefully avoided even the 
mention of in our first report. Justice, however, to the 
Society which we had the honour to represent in this investi- 
gation, and justice to ourselves, required that the full yet 
simple truth should be declared. 
Elsewhere we have pointed out the danger which is con- 
nected with the introduction of diseased exudations or 
products into the organism of a healthy animal. In propor- 
tion to the extent and duration of a malady, so will these 
exudations become more vitiated, as well as changed by their 
retention within the body, by the operation of chemical laws, 
and the danger of the proceeding will be correspondingly 
increased. Some of the continental experimenters, and 
among them Dr. LiidersdorfF, have said that no effects will 
follow the employment of the serous fluid which is effused 
into the areolar tissue of the lung at the commencement of 
Pleuro-pneumonia. They add, that in an advanced stage of 
the disease the effusion is almost certain to produce its action, 
and that at the termination of the malady not only does it 
