New York AgGriovutturRAL ExprprRIMENT STATION. 701 
Cost of Treatment. The cost of treatment was as follows, 
counting the cost of the mixture at one-half cent per gallon: 

First treatment (average gallons per tree, 3.8)...... 0... cece eee ee eee $0 .0165 
Second treatment (average gallons per tree, 5.0)............ cece eens .0250 
Third treatment (average gallons per tree, 7.07) ...... 0... eee ee eee .0358 
Fourth treatment (average gallons per tree, 9.0).......... ..-.eeeeeee .0400 
Fifth treatment (average gallons per tree, 9.0) ..... 2... ee ee eee ee .0400 
Sixth treatment (average gallons per tree, 9.0) ........ 0... cece cee eee .0400 
Average cost of material per tree for six treatments ...............0- $0 .1968 
Average cost of labor per tree for six treatments ...................-. 0.3561 
Average total cost per tree for six treatments.............. 00.00 eeees 0.553 
mverave cost per treatment per tree... oe cece twee ee cencdeun .092 
Average total cost per tree for five treatments .............. 22. cee. 0.476 
Average cost per treatment per tree................... Paes dt ite ait .095 


Not including the cost of packing and handling the increase in 
the crop resulting from spraying, the gain per hundred trees from 
the spraying varied from $424.70 to $562.40. For several years 
past these trees have been quite unprofitable on account of the 
attacks of pear scab. The trees are about thirty-five years old. 
and the largest of them are from twenty-five to thirty feet high. 
They have been given but little, if any, pruning in recent years 
and the tops are, therefore, very dense, making it difficult 
to spray them thoroughly. The spraying of these trees was 
more expensive both in labor and in material than it would have 
been with open top trees of the same size. All who have had 
experience in spraying orchards will agree that the cost of the 
treatment as here given is very high, even for trees of this size. 
Those who will trim their trees properly and plan to spray the 
entire orchard will no doubt be able to treat even large trees at less 
cost per tree than that given above. While the profit from treat- 
ment as shown in these experiments is probably much above the 
gain that may ordinarily be realized from even those varie- 
ties specially subject to the attacks of the scab, yet in these 
experiments the gain from spraying might have been greater 
than it really was had it not been for the loss of so much fruit by 
the wind storm, as previously stated, and had the tree tops been 
less dense. 
The treated Seckel trees were in two blocks, one of which 
was surrounded by untreated infected trees, while the other 
block was also hemmed in on three sides, by infected trees. 
The White Doyenné trees were somewhat scattered, but in most 
