48 3 a 
(2) To determine the effect of spraying on growth, starting with the 
seedling or cutting, and continuing the work until the tree is of salable 
size. ; 
(3) To determine the relative value, as far as resistance to disease is 
concerned, of different stocks; as for example Japan versus French 
pear seedlings; Mariana plum versus Myrobolan, ete. 
The experiments designed to throw light on Question 1 were carried 
on at Geneva, N. Y. Work bearing on the other questions was con- 
ducted at both Geneva, N. Y., and Mullikin, Md. 
The fungicides used were Bordeaux mixture, containing 6 pounds of 
copper sulphate and 4 pounds of lime to 22 gallons of water; ammoniacal 
solution of copper carbonate, consisting of 3 ounces of copper carbo- 
nate dissolved in 1 quart of ammonia (26°) strength, and diluted with 
30 gallons of water; potassium sulphide solution, made. by dissolving 
one-half an ounce of potassium sulphide in 5 gallons of water. 
While the experiments at Geneva and Mullikin were in a measure 
identical, it is desirable to make a separate report on each. The treat- 
ments, therefore, may be properly divided into two parts: 
(1) Experiments at Mullikin, Md. 
(2) Experiments at Geneva, N. Y. 
EXPERIMENTS AT MULLIKIN, MD. 
Through the kindness of Franklin Davis & Co., of Baltimore, the 
facilities of their large nursery, located at Mullikin, Prince George 
County, Md., was placed at our disposal. The following is a list of the 
stock which was unpacked, planted, carefully cultivated, and budded 
under the direction of Mr. J. R. Jennings, the foreman of the nursery: 
Pear: seedlings, Japan. - 22... <-jc26s-crjoss 2 <4e ee ese ee ee eee 1, 000 
Pear seedlings, French’. ..225.\.22 he ae Pe eee 2, 000 
Cherry stocks, Mahaleb: 2-2. 22 c2.< cece Gee ene ae a moe oe 500 
Quince stocks: 2e:se:5 22s oe eon pe ee eae ee ee eee 250 
Appleseedlings. 2.002. io. Soe tries ree a ae nee ee are 2, 000 
Plam ‘stocks, Mariana: 9222.32 ate Soe eee ee ae a See eee ae 500 
The piece of ground selected for the stocks was a moderately rich 
sandy loam, 700 feet long by 21 feet wide. It had been used for grow- 
ing nursery stock since 1884 or ’85, and was as uniform in fertility as 
could be obtained. For convenience the experimental plat was divided 
into 33 blocks, each of which was treated as set forth in the table 
below: 
