New YorK AGRICULTURAL EXPERIMENT STATION. 267 
injuries were too far advanced before my examinations were 
made. 
It is true that plant hairs, and especially those along the mid- 
rib and its branches, are often destroyed by the bordeaux mix- 
ture, causing very small dead specks in the leaf, but I could noc 
find that the large spots formed about these. It may be that 
a sufficient amount of the copper poison enters the leaves through 
leaf hairs and stomata to cause the “yellow-leaf” so often 
found unaccompanied with the spotting. The dead spots form 
chiefly on the midrib and the main veins of the leaves because 
liquids collect in the depressions in which these parts lie. 
EXPERIMENT II.— EFFECTS OF BORDEAUX MIXTURE ON APPLE TREES 
SPRAYED DURING WET WEATHER. 
Detailed results of this experiment are shown in Tables III 
and IV. Plats in Table III contain one Rhode Island Greening 
tree; plats in Table IV, two trees of the same variety. 
TABLE III].— BorpEAUX INJURY TO FRUIT SPRAYED DuRING RAIN. 








FRUIT. 
STRENGTH OF MIXTURE. —— —_—— 
- Injured. Uninjured. Injured. 
GAS Lime Water Lbs. ozs. Lbs. ozs. Per ct. 
1 —] —50 88 4 = ad 225 
2 —-2 —50 31 Oe ae be 401 14 fie, 
HA —3 —5O0 92 5 533 8 Lae, 
4 —4 —50 iis ewe Mil 298 14 30.9 
nec keener ears Pat | - BRR et eg 647 6 O. 
1 —2 —50 12ers 405 4 aoe al 
2 —4 —50 63 6 603 10 O35: 
3 —6 —50 a 7 4 62a le 15.8 
4 —8s —50 93 6 302) b4 23.6 

Taste 1V.— BorpEAuX INJURY TO FRuIT SprAYED DurRING Dry WEATHER. 






FRUIT. 
STRENGTH OF MIXTURE. 
Injured. Uninjured. Injured. 
Gr S Lime Water 13DS.0 O25. Lbs. ozs. Per ct. 
rf —l —50 83 10 1148 6 6.8 
2, —2 —50 625710 770 3 TD 
3 —3 —50 89 14 915 2 8.9 
4 —4 —50 135% 12 692 3 | 16.4 
(CUTE e ST 1 eh a ee ee Se 1161 4 OF 
1 —2 —50 28 9° 1060 15 2.6 
2 —4 —50 37 8 1063 10 3.4 
3 —6 —50 129 4 899 3 12.6 
4 —8s —50 exe aia (Ope lhe. 4.5 
=a a | 


