
i. 
EXPERIMENTS with Nursery SToox. 649 
superior to the ammoniacal solution. In the order of their 
efficacy the four methods of treatment are as follows: Bordeaux, 
six treatments; Bordeaux, five treatments; ammoniacal solution, 
six treatments; ammoniacal solution, five treatments. Five 
treatments with the ammoniacal solution proved almost entirely 
ineffectual. Plate 22 shows the average of stocks treated six times 
with ammoniacal solution. 
JAPAN PEAR STOCKS. 
1891.— One row of 466 stocks was planted in a manner precisely 
Similar to that described for the French stocks. ‘The dates of 
treatment were as above given, one-half the treated portion 
receiving three treatments and the other seven, one-half being 
treated with Bordeaux, the other with ammoniacal solution. ‘The 
results obtained were striking, as illustrated by the following 
notes on the releaved stocks: 
Table 3.— Showing number of Japan stocks forced toput out 
new leaves. 
Total 
NUMBER AND TREATMENT OF STOCKS. number hy cent 
releaved. | T® eaved, 
Sr aetocks treated 7 times with Bordeaux... 6... cecowccccccscvcccvccesece 1 801 
88 stocks treated 3 times with Bordeaux ........0 ..sescececcccecees eoeces 21 Pee Wy 
87 stocks treated 7 times with ammoniacal] solution ........c.eccecceeees 15 142. 
90 stocks treated 8 times with ammoniacal solution ............2e.eeeees 9 8.0° 
RM CNPICSE PINTER ECALEUL Ce ie eyes nd a cnale Gaicis olen vin oielace’b sinlwlecearpisie de cic eeeas-p vale siete 47 1.21 



The average diameter of the stocks near the collar was not 
perceptibly greater in the treated than in the untreated, the 
average difference amounting to less than one thirty-second of 
an inch. The untreated Japan stocks suffered more from the 
disease than the untreated French stocks. 
1892. The same row of stocks as that employed the previous 
season was treated, but one-half or more of the stocks were 
budded in 1891, as described subsequently on pp. 666, 669. The 
treatments given were as described on pp. 670, 671. As early as 
June 24, the unbudded stocks, which had not been treated, 
showed the disease plainly, every stock being affected. At this 
date it was evident that the Japan stocks, as introduced from 
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