138 KEPORT OF THE BOTANIST OF THB 
strip of three rows, one-fifth acre, was sprayed. The principal 
object of this test was to determine whether a resin solution 
could be used to advantage for making the Bordeaux mixture 
adhere to the foliage of the asparagus and at the same time not 
injure it. 
NOTES. 
The three rows were sprayed three times—August 5, 17, and 
September 1, one barrel of the resin-Bordeaux mixture* being 
u-ed in each application. On September 9, a slight difference 
between sprayed and unsprayed rows could be seen. The un- 
sprayed portion was stripped of its foliage and all dead by Octo- 
ber 7; the sprayed rows held most of their foliage until killed by 
frost. Plates XII and XIII, taken September 27, show only 
**Resin-Bordeaux mixture was prepared by first making the Bordeaux 
mixture in the usual way, the 1-to-8 formula being used and the amount of 
lime being determined by test; after which two gallons of stock solution 
of resin was added to every 48 gallons of the Bordeaux mixture, the whole 
being stirred. By testing it was found best to dilute the stock resin solu- 
tion with 8 parts of water before adding it to the Bordeaux mixture, that 
is, in preparing a 50-gallon barrel of mixture, the copper sulphate and 
lime were diluted enough to make 40 gallons after which 2 gallons of 
stock resin solution was diluted to 10 gallons, then added to the Bordeaux 
mixture, 
The formula for preparing a stock solution of resin has been given in 
Bulletin 144 of this Station, but for convenience it is repeated here. The 
proportions are as follows: 
RGRID end bre os die BC aTNe stata Beate a Tale seed ade ears 5 Ibs. 
Potash lyeviive, jae as Sete on cea Se 1 Ib. 
Bish ol). g.jhaitueso aie ei ee ee et ae ee 1 pt. 
Wale co ic sie eae ae su sap et eyCL ee ReMEEMET IN Ce iniio st « serene 5 gals. 
In preparing large quantities of the resin solution it was found unneces- 
sary to follow all the precautions given in Bulletin 144; also that it could 
be prepared more rapidly by simply placing the oil and resin in the kettle, 
heating them until the resin was dissolved, then remove kettle from fire 
and allow the mass to cool slightly after which the solution of lye is added 
slowly, the whole being stirred while adding the lye. After adding the 
lye the kettle should be again placed over the fire and the required amount 
of water added. The whole should be boiled until the solution will mix 
with cold water, forming an amber-colored solution. Care should always 
be taken to have the resin and oil cool enough so that when the solution of 
lye or the water is added, the whole mass will not boil over and eateh fire. 
