474, QUEENSLAND AGRICULTURAL JOURNAL. [1 Derc., 1897. 
On 28th August, Mr. Nugent Wade Brown suggested to the Minister for 
Agriculture that I might be allowed to inoculate a large number of his bulls at 
Rosedale, which subsequently were to be sent to a tick-infested district in 
North Queensland. 
Having received the necessary instructions, I proceeded to Rosedale on 
8th September. 
The blood used for inoculating these animals was taken direct from a calf 
which had been inoculated on 3rd March last with 5 cubic centimetres of blood 
from the Inkerman steer, resulting in a very mild attack of fever. 
Altogether §8 bulls, 3 steers, and 2 poddy calves were inoculated, each 
with 5 cubic centimetres of défibrinated blood. 
The bulls (Devons and Shorthorns) were from two to five years old, and a 
few probably older, but the majority were about four years old, most of them 
being in a very poor condition, while few were in fairly good condition. 
I understood from Mr. Brown that wherever the bulls were inoculated 
they would be removed to an adjacent paddock fora period of six weeks or 
longer, untilcompletely recovered from the effects of inoculation, instead of 
which Mr. Brown afterwards informed me that they must go back as soon 
as possible to Moralgaren, which meant three days’ hard travelling. I told 
Mr. Taylor, who was in charge, that this being the case it was absolutely 
necessary for the bulls to be placed in a good paddock with plenty of grass 
and water, when he at once informed me that there was very little grass in the 
paddock where the bulls were going, but as soon as he was able to muster 
cattle from a good grass paddock the bulls would be removed to it. However, 
the bulls were travelled for three days to Moralgaren, but I have not heard 
whether or when they were removed to the fresh paddock. 
On 14th October, Mr. Hooper, Stock Inspector at Gladstone, visited 
Moralgaren ; and Mr. Taylor furnished him for me with the following informa- 
tion respecting the inoculation experiment :— 
8th September i 88 bulls and 3 steers inoculated. 
22nd n 54 A number apparently sick. 
23rd a3 5 8 bulls died. 
24th ine) ee 
: se BF ee 
Up till 8th October | a cae steal 
36, total number dead. 
The latest report is that the remaining 53 bulls and 2 young steers have 
completely recovered, and are daily improving in their condition. 
Of the 36 animals which died, 33 were old bulls, 2 young bulls, and 1 old 
coarse steer. 
I am of opinion that the heavy mortality was largely due to the bulls being 
inoculated at an age when they are extremely susceptible to any form of fever, 
whether produced naturally or artificially; at the same time it is highly 
probable that the travelling and subsequens moving (?) of the bulls tended to 
increase the death rate. 
Mr. Nugent Wade Brown is to be highly complimented for the trouble and 
expense he has incurred in taking over all the responsibility of this most valuable 
experiment, and I sympathise with him in the loss he has sustained; at the 
same time, if the surviving 53 inoculated bulls reach their destination in the 
permanently tick-infested districts and remain immune to gross tick-infection, 
the result of the experiment will be regarded by every stockowner throughout 
the colonies as highly satisfactory, when compared with the removal of - 
uninoculated bulls, where the losses amount to from 60 to 70 per cent., some- 
times 100. 
Some considerable time may elapse before the method of preventive 
inoculation for tick fever is sufficiently perfect, so as to ensure the successful 
inoculation of old bulls without incurring any losses; therefore, considering 
