CABBAGE MOTH 211 



2. Note when the caterpillars are feeding, usually in 

 the early part of the day, and dispersed over the plants. 

 Then have boiling hot water ready, and with a watering 

 can with a fine rose sprinkle it over the caterpillars. 

 If held high up the hot water will fall on the cater- 

 pillars at a temperature of about 150, and unless 

 applied excessively will not injure the plants while 

 cleansing them from the caterpillars. Every cater- 

 pillar within reach of hot water at a temperature of 

 130 to 135 will be killed, therefore the operator 

 must so apply the hot water as not to injure the 

 Cabbages by having it too hot, and yet have it hot 

 enough to kill the pests. Hot water deservedly 

 claims preference for freeing Brassicas from cater- 

 pillars. 



3. Paraffin oil emulsion. This is readily made by 

 dissolving a pint of soft soap in a quart of soft water. 

 When dissolved remove from the fire, and while still 

 boiling hot add half a pint of paraffin oil and immedi- 

 ately churn the mixture with a small hand syringe. 

 In five minutes a perfect emulsion will be formed, 

 which should be diluted with ten times its volume 

 of water for use. Apply by means of a fine rose 

 watering can or a spraying apparatus. This pre- 

 paration has the disadvantage of tainting the heads 

 if applied to the fully developed plants, hence is 

 best used when the plants are young, or at least 

 a month should elapse after treatment before cutting 

 the Cabbages for use on account of the smell and 

 taint. 



