Il6 FRUIT CULTURE UNDER GLASS. 



the spider, a dry warm atmosphere favours the spread 

 of the thrip. Such soft woolly-leaved vines as Gros 

 Colemar are apt to be injured by strong doses of 

 tobacco-smoke, so that this cure must be cautiously 

 administered. 



Mealy Bug. — This, like thrip, will not appear on vines 

 unless brought into the vinery on other plants. But 

 once it gets a footing, it is one of the most troublesome 

 of insects, and if left to have its own way, will breed 

 with wonderful rapidity, and overrun the whole wood, 

 foliage, and fruit. The very first appearance of it 

 should be the signal for dealing with it as promptly 

 and thoroughly as possible. While the vines are in 

 leaf, the most effectual way is to pick it off with a 

 pointed piece of stick. The summer season is the 

 time to deal most successfully with this insect while 

 it is moving about. The vines should be very care- 

 fully looked over each week, and every appearance of 

 the bug destroyed. This must be followed up tiU. the 

 leaves drop off. After the vines are pruned, every morsel 

 of loose bark under which it creeps must be removed, the 

 vines thoroughly scrubbed with water, in which about 

 the size of an egg of soft soap and a gill of tobacco- 

 liquor to every gallon has been mixed ; then fill up 

 every crevice by applying Gishurst's Compound, at the 

 rate of 8 ounces to a gallon of water, with a brush. 

 The spring following examine the vines after they start 

 every few days, and destroy any bugs that appear. 



Phylloxera vastatrix. — Horticulturists have within 

 the last few years had a most formidable addition to 

 the host of foes with which they have to grapple in 

 the successful cultivation of the grape vine. And it is 

 scarcely possible to conceive of a more insidious and 

 destructive enemy than the new invader — Phylloxera 



