No. 4.] CATTLE COMMISSIONERS. 519 



proof of method of infection, rather than the fact that they were 

 infected. 



At least one possible source of infection has been discovered. 

 On June 19, the books of the stock yard company show that a car- 

 load of seventy-eight calves, one dead (car No. 22989, New 

 York Central) , en route from Buffalo to New York, were stopped 

 off and put into pen 15 D. The way-bill of the railroad company 

 shows that a car No. 23033, with a similar consignment, was 

 stopped off at the yards June 18. This way-bill was marked 

 "quarantined cattle," showing them to have been cattle from the 

 cattle-tick area. These calves were held in Albany until the 24th 

 of June, awaiting a better market. According to the most reliable 

 testimony Dr. Kelly and myself could get, some of these were at 

 least yearlings, and were transferred certainly to pen 17 D. Our 

 notes taken at the time of investigation show this. While I am of 

 the opinion that the same testimony showed that these calves went 

 into pens 15 and 16 D in turn. Dr. Kelly thinks not. However, 

 the fact that the stock yards company received quarantine cattle 

 into alley D, pens 14, 15 and 17, and harbored them about five 

 days, is fully established. 



Note. — Copy in part of letter from Dr. Kelly to Dr. Curtice : — 



Oct. 25, 1897. 

 Dr. CooPEK Curtice, Moravia, N. T. 



Dear Sir : — I sent you, on Friday evening, a Boophilus Bovis, which 

 was taken by Mr. Rand, in my presence, from neck of a native horse, 

 weighing about 1,400 pounds. This horse has been allowed to pasture 

 in alley D and the yards adjoining, with the pony (from which the two- 

 weeks-old ticks were taken), together with a number of colts. This 

 accounts for the manner in which the ticks got on the pony. The pony 

 referred to v.'as purchased in Buffalo some time in August, and was 

 shipped direct to West Albany, where it has been kept, and is slill here. 

 A portion of the time it has been kept in the barn, allowed to pasture in 

 alley D and yards adjoining, and the balance of the time in the barn 

 where it is at present. I am now satisfied that this pony picked up these 

 ticks in alley D. I intend to look on the colts which pastured tliere at 

 the time the horse and pony did, and will see if I cannot find more 

 ticks. I do not know as it has ever been jjroved before that ticks would 

 develop upon a horse, but certainly here is a case where they have. 



In reference to yards 15 and 16, since we have found that the other 

 carload of calves (No. 22989) were quarantined cattle, explains how 

 these yards were infected. Since receiving the list from Washington, 

 the railroad company corroborates it, and the cars Nos. 23033 and 22989 

 are correct. No. 22989 contained ninety-six live and two dead calves, as 

 stated before. Both of these cars were unloaded, and the calves were 



