248 
stated in a previous publication * the insignificant quantity of leaf- 
bliglit present offered no opportunity to test tlie fungicides in a satis¬ 
factory manner. 
1892 .—The same row of cuttings as employed in 1891 was treated this 
season, but one-half or more of each section had been budded the fall 
previous, as noted below, p. 200. Tlie treatments were identical with 
those made upon the pear stock; see p. 202. As early as July 7 the 
leaves on the untreated section left without budding showed the dis¬ 
ease plainly, while the foliage of those sections treated with Bordeaux 
and arnmoniacal solution remained free from the disease. By August 
30 two-tliirds ot the foliage of the unbudded, untreated portion had 
fallen to the ground, while the treated sections standing in the same 
row, as shown in the plan, p. 257, row Y, remained intact. Plates xxiv 
and xxv show the appearance of the treated and untreated sections. 
On September 29 the difference manifested by these stocks was not 
one of foliage only. The twigs of the treated, upon close examina¬ 
tion, were apparently a trifle more robust, and the caliper of the cut¬ 
tings at the base showed a considerable increase not to be attributed 
to differences in soil. Below are given the data secured from a careful 
calipering of the unbudded stocks at the collar, made October 15. The 
figures given are in thirty-seconds of an inch and represent the aver¬ 
age diameter of stocks in each section: 
Table 6.—Showing average caliper of treated and untreated unbudded quince stoclcs. 
Section. 
Number and treatment of stocks. 
Average 
diameter. 
Aal 
16 stocks treated 5 times with arnmoniacal solution. 
25.3 
26. 2 
26.3 
25. 0 
27.0 
24.0 
27.0 
25.2 
05 0 
Bal 
16 stocks treated 5 times with arnmoniacal solution 
Cal 
16 stocks treated 5 times with arnmoniacal solution 
Aa2 
15 stocks treated 6 times with arnmoniacal solution 
Ba2 
16 stocks treated 6 times with arnmoniacal solution 
Ca2 
15 stocks treated 6 times with arnmoniacal solution 
Abl 
15 stocks treated 5 times with Bordeaux mixture 
Bbl 
16 stocks treated 5 times with Bordeaux mixture 
Cbl 
16 stocks treated 5 times with Bordeaux mixture 
Ab2 
17 stocks treated 6 times with Bordeaux mixture 
29.2 
26 4 
Bb2 
17 stocks treated 6 times with Bordeaux mixture 
*Div 
90 stocks untreated.. 
on n 
* Unfortunately a section. Cb2, was not staked off in planning the experiment. 
The inference from the above table is that the stocks which held 
their leaves through the season made a greater growth in diameter than 
those from which the foliage dropped in July and August. Taking the 
average ot all stocks treated with arnmoniacal solution, 91 in number, we 
have 25.7 thirty-seconds of an inch, while the average of 81 stocks 
treated with Bordeaux was 26.5 thirty-seconds. The better of these two 
averages (26.5) when compared witli the untreated (20.6) gives an in¬ 
crease in diameter oi 5.9 thirty-seconds or nearly three-sixteenths of an 
inch. 
* Bull. No. 3, op. cit., pp. 58-59. 
