19 
more cows were condemned; also two of the previously con- 
demned cows were killed and found to be diseased. The details 
of these experiments will be the subject of a future bulletin. 
The treatment of the diseases of the apple was continued. 
The principal fungous disease to be dealt with is the apple scab, 
but in the previous year a disease differing considerably from 
the scab was observed especially on Baldwins. This disease, 
which will be treated of more fully in a future bulletin, produces 
on the surface of the fruit small brown depressed spots, which 
after the apples are gathered develop still further, producing 
a form of rot. This disease produces a very considerable loss. 
About forty Baldwin apple trees were sprayed with Bordeaux 
mixture of different strengths and at different times ; at two of 
the sprayings Paris green was added to the Bordeaux mixture 
for the codling moth. Experiments in the treatment of potato 
scab by soaking the seed potatoes in a solution of corrosive 
sublimate were continued. It is believed that different forms 
of fertilizers while they do not cause the disease still have an 
influence on its development. To investigate this point, plots 
fertilized respectively with stable manure, with commercial fer- 
tilizer, with plaster, and with ashes were planted. One half of 
each plot was planted with scabby seed, treated by soaking in a 
solution of corrosive sublimate, one part to one thousand of 
water, while the other half was planted with scabby seed untreated. 
H. H. Lamson, 
Bacteriologist. 
ADDITIONAL REPORT UPON TUBERCULIN TESTS 
It was desired to place ten head of young cattle in the new 
barn ; they were therefore tested for tuberculosis by the injec- 
tion of tuberculin. The temperatures were taken at 8 p. m. and 
at iop. m. Monday, November 25, between n and 11 130 they 
received an injection of tuberculin, the dose varying according 
to the size of the animal form 1.75 cc. to 3 c. c. The tuberculin 
used was a ten per cent, solution obtained from Theodore Met- 
calfe & Co., Boston. The injections were made under the skin 
