24 



DEPARTMENT OF AGRICULTURE. 



to boliovo that acute observation would reveal first the local change 

 and then the fever. 



In order to show the value of the thermometer in this disease, I sub- 

 join the observations made by nu' on two herds of cows sutterinj; from it, 

 and which 1 inoculated on the liOth of February, 1SG9, at Alexandria: 



Mil. HKTD.s COWS. 



No. rahrciilicit. 



1 101.5 



2 iin.8 



• -A 102.G 



4 101.4 



5 101 



6 102.2 



7 102 



8 101.8 



9 102 



10 102.8 



11 105. 2 



12 101.4 



13 101.3 



14 103 



15 100. 6 



16 101.8 



17 102. 2 



18 101.8 



19 102.6 



20 101 



■sin. I5IEMULLERS COWS. 



Xo. T'uliroiiheit. 

 1 101.4 



2. 

 3. 

 4. 



102 

 102 

 101 



5 101.6 



(; 102.3 



7 102 



8 • 101.8 



9 104.4 



10 102.6 



11 101 



12 102 



13 101.6 



14 105. 6 



15 103.6 



16 101.3 



17 101 



18 101.3 



19 104.4 



20 102. 2 



21 : 101 



Of Eeid's cows, Nos. 11 and 14 were sick, and of Biemiiller's, :N^os. 9, 14, 

 15, and 19. Some doubt exists as to No. 19; I had not opportunity of 

 seeing her again. Mr. Eeid thiidvs she might have been at heat, but 

 from the indications, however slight, associated with the elevation of 

 temperature, I believe it was one of the numerous latent cases which the 

 thermometer alone reveals to us. Nos. 14 and 15 were in the earliest 

 stage of the malady, and both grew worse, suttered for three weeks, and 

 then recovered. 



OBVIOUS PREMONITORY SIGNS. 



The obvious iiremonitory signs are shivering fits, as in ordinary fever, 

 but their transient and mild character lead to their often being passed 

 unnoticed. TIu' animal's coat h>oks dnll, staring, and the skin is often 

 rigid. An occasional cough of a «lry and harsh character is noticed, 

 and, when insi>ecting a herd in a field, if the cattle are made to move 

 briskly, several will be found to cough. For some days the cattle appear 

 to thrive well, and milch cows yield a copious amount of milk. It has 

 been renmrked that they appear full— indeed fuller in the early morning 

 than other animals which, like them, had not fed since the previous 

 evening. The exeicment is drv and urine s(»nu>what scanty. 



