16 
taken alternately from the treated and untreated, were selected and 
measured as follows: 
(1) Total height of vines. 
(2) Total number of shoots on each vine. 
(3) Total length of shoots. 
(4) Total number of leaves. 
(5) Diameter of each leaf. 
From these figures the following averages were obtained: 
TREATED VINES. 
Average height: 2... Seeks coi often eee eee feet... ouom 
Averagce number Of shoots. 222-555. eee eee ae En eee 28. 35 
Averagre len oth OF Shs. — 222-06 = ope he ne eee inches.. 7.84 
Average mumber of leaves per Shoop: 22-5, o-2-- Sasso ee 3. 60 
Averace dianieber Of leaves. 220). 2 Perce tase pea cei inches.. 3.20 
UNTREATED VINES. 
Averaceheleiib: 22 6.5. sce e sie qe eens tee See ae sae feet.-; 73: 1a 
Average number, Of SHOOLS 2 <2 i225 ete Soe eae ee es eee 28.9 
Average lene th of shoots. 22 2. Ac tes lee Se ea eee inches.. 10.0 
Averare numberot leaves per shoot 22. 5s: 2222... 2e8 tse ee ake 3.4 
Averape diameter ot leaves. oo: 2+ 2s oS eee ae mchess= #aas0 
It will be seen from these figures that the condition of the vines, as 
regards size and grow th; were practically the same on the treated and 
untreated plats. 
Third treatment.—This treatment, en May 25, was made just after a 
rain, the first of any consequence since the work began. The vines at 
this time were in full bloom. No black rot or other disease had appeared. 
A careful examination of the vines showed that those in plats 1, 2, 3, 4, 
and 5 were slightly injured by the treatments, the leaves in most cases 
being scorched near the edges. All the other plats were perfectly 
healthy. Measurements the same as in the case of the second treat- 
ment, with the exception of the total height of the vines, were again 
made, the result being as follows: 
TREATED VINES. 
Average HUDIDeL Ol -SHOOUS ~asce. oo oe- eee er oe eee eee 41.21 
Average length of Shoots 222). paaae a ane eee ee inches.. 16.99 
Average number of leaves per shoot-- 2-9-2425. eee Sait. 
Average diameter of leaves: ..2--ia-2-~ oe eae inches... 4. 18x3.71 
UNTREATED VINES. 
Average number-of ‘Shoots: 502-27. ene coe oe eee a eee 38. 98 
Average length of shovis(ss 223.2. 2. oe a eo see eee inches... 15.56 
Averare number of leaves ‘per shoots.--7- 225. s4-5- eee 5. 54 
Averape size:Of leaves 23. coe oe eee ee inches.. 4. 58x3. 51 
An examination of the foregoing figures and a comparison of them 
with those given under the second treatment brings out several! interest- 
ing points. First, it will be seen that the number of shoots on the 
treated vines increased 4.53-+ per cent during the twelve days which 
elapsed between the second and third sprayings. On the untreated 
