CHRYSANTHEMUM MIDGE. 17 
divided into three divisions or rows, namely, (a), (b), and (c). The 
last, (c), in each case served as a check on (a) and (b), which were the 
treated rows. The first treatment consisted of dipping the cuttings 
directly after they were taken, and the subsequent treatments con- 
sisted in spraying daily for a period of 7 days thereafter with a solu- 
tion of the same strength. 
Lot 1 consisting of clean cuttings to be used as a check was kept in 
a separate and uninfested unit for the purpose of determining the 
effect of such treatment on the cuttings. Lot 2 consisting of clean 
cuttings and lot 3 of infested cuttings were both tightly screened and 
placed in a propagating frame in an infested unit. In this manner it 
was hoped to determine the effectiveness of such treatment when 
both clean and infested cuttings had to be grown together. 
LOT 
Six clean cuttings in each row. 
Row (a). Nicotine sulphate (1-800) plus fish-oil soap 1 ounce to 1 gallon of 
solution. 
Row (b). Volatile nicotine sulphate (1-800) plus fish-oil soap 1 ounce to 1 gal- 
lon of solution. 
Row (c). Checks; not treated. 
Results.—During the period of treatment it appeared as though all 
the plants were affected slightly. Row (a): The lower leaves of all 
the cuttings turned yellow, but 10 days after treatment was discon- 
_ tinued all but one cutting were in fine condition. Row (b): Even 
though no direct signs of burning were evident, the plants appeared 
sickly during the second and third treatments. Ten days after the 
discontinuance of the treatments the cuttings were in better condi- 
tion than either (a) or (c). The check row (c) was slightly affected 
due to its proximity to the treated rows. Ten days after treat- 
ment was stopped only two plants were in good condition and one 
was poor. 
The conclusion to be drawn from this test is that the method of 
treatment under (b) was probably the better of the two. 
LOT 2. 
Seven clean cuttings in each row. Placed in infested unit after 
first treatment. 
Row (a). Nicotine sulphate 40 per cent (1-1,000) plus fish-oil soap 1 ounce to 
1 gallon of solution. 
Row (b). Volatile nicotine sulphate 40 per cent (1-1,000) plus fish-oil soap 
1 ounce to | gallon of solution. 
Row (c). Checks; no treatment. 
Results.—Although this dosage was weaker than that used in lot 1, . 
it affected the cuttings much more. After the second and third 
treatments the plants all looked wilted. Ten days after the last 
