452 INOCULATION FOll PLEURO-PNEUMONIA IN CATTLE. 
vinces having unfortunately been most severely visited by the disease ; 
and, convinced of the efficacy of the system, the government do all in 
their power to promote the inoculation as much as possible, and at 
present, when the disease breaks out amongst the cattle in a certain 
locality, the authorities of that district immediately cause all the cattle 
to be inoculated, as the only means of preventing the infection from 
spreading. 
a I have, &c. 
(Signed) “ J. R. Curtis.” 
In addition to this communication to the Government, we 
are enabled to give an extract from a letter which we have 
just received from Mr. Curtis, dated Cologne, June 1, 1853, 
and which confirms the conclusions we had previously 
arrived at. 
“ I have really seen,” writes Mr. Curtis, “ such extraordinary effects 
follow inoculation, and have also seen scientific men of the highest stand- 
ing who opposed the system for a long time become complete converts to 
inoculation, that I can no longer doubt, and consequently I am an ad- 
vocate of the system. 
“The Prussian Government, who, as you truly remark in your 
Report,* ordered the operations of M. de Saive to be discontinued last 
year, are also amongst the converts , and inoculation is encouraged by 
every means by the government.” 
Besides the inquiries of Dr. Ulrich in Belgium, it appears 
from some reports with which we are just favoured by Mr. 
Iiebeler, the Consul-General of Prussia, that Dr. Ludersdorff 
of Berlin has also investigated the subject of cattle inoculation 
in the Cologne district. This step w T as rendered the more 
necessary from the ill success of Dr. De Saive’s operations 
last year. Dr Ludersdorff concludes his Report by stating 
that, “ although his observations are perhaps not fully con- 
clusive, still they certainly speak more in favour of than 
against inoculation. They show that the danger of this remedy 
is in no proportion to the losses produced by the natural 
disease, and that consequently inoculation should be more 
generally adopted.” A Committee of the Agricultural Society 
of Ober-Bamein district also reported that “ Dr. Willem’s 
plan of operating can be so improved as to avoid the ill con- 
sequences at present attending it.” 
Prussia, we thus see, has been induced to follow in the 
wake of Holland, by adopting inoculation as a means to save 
her cattle from the ravages of Pleuro-pneumonia. 
As yet we are without direct or official information from 
France, and, therefore, we must not anticipate the opinions 
of her Commissioners being in favour or otherwise of the 
* Mr. Curtis here refers to our former report. See Journal, vol. xiii, p. 37<». 
