144 



young shoots chance to receive any injury by late 

 spring frost, the tender part of the leaf will imme- 

 diately curl up and change to a dark brown colour ; 

 and in this state the thrips generally attack them 

 with great greediness, especially the white Sweet- 

 water and white Muscadine kinds. The thrips, how- 

 ever, are seldom injurious to vines growing in the 

 open air, except in the spring ; and to those in the 

 hot-house, they are most hurtful when the grapes are 

 nearly ripe. They attack the bunches as well as the 

 leaves, and commonly prey upon the extremities of 

 the berries, but more particularly at the end next the 

 foot-stalk. In white grapes, the part of the berry 

 injured changes to a dark colour, the foot-stalk turns 

 black, and the berry withers. {Speechley, 172.) 



Fumigation, with tobacco smoke, is the most effec- 

 tual mode of removing this marauder from the vine. 

 For a house, 43 feet long and 1 1 feet wide, 1 lb. of 

 tobacco is sufficient ; take an old wire basket, con- 

 taining a few hot cinders, put the tobacco on them 

 and hang the basket up in the house ; then blow it 

 with bellows until it is well lighted, then raise steam 

 in the house by any mode most convenient. The to- 

 bacco will keep burning until it is all consumed. 

 The steam keep on for about an hour, in which time 

 the plants are covered with dew, which is well mixed 

 with tobacco smoke. Repeat this on the following 

 day, using only half-a-pound of tobacco. Those who 



