Three Crops of Grapes in One House. 73 



Art. VI. Mode of destroying the Green Fly on Peach Trees. 



By COTSWOLD. 



As soon as the insects begin to appear, I prepare to get rid of 

 them by making the water-pipes as hot as I can. I then fill the 

 house with tobacco smoke, and water the pipes afterwards, so as 

 to fill the atmosphere of the house with steam, at the same time 

 that it is full of smoke. After the steam is condensed on the 

 leaves and points of the young shoots, globules of the tobacco- 

 oil will be found on the surface of the globules of water, some- 

 thing in the same way as the prismatic colours are shown in a 

 soap-bubble blown from a tobacco-pipe. This operation not 

 only completely destroys the green fly, but also the scale upon 

 the upper surface of the leaves of orange trees, because the 

 insects are exposed to the descending vapour. This vapour, 

 when deposited on the leaves, has quite a caustic taste. I have 

 practised this method for years, and always with complete 

 success. 



Jan. 17. 1841. 



Art VII. On growing Three Crops of Grapes in One House. 

 By T. S. W. 



In your notice of the gardens at Hungerton Hall, Vol. XVI. 

 p. 570., you describe a mode, practised there, of growing three 

 crops of grapes in one house in one year as being new, and well 

 deserving of imitation. That it is a mode rarely adopted by 

 gardeners I am aware ; and I would wish to draw their attention 

 to this most important subject. Frequently have I regretted 

 seeing vineries made no manner of use of one half the year, 

 when, by a little management, ripe grapes might be produced 

 in them seven or eight months in the year ; so that one house 

 might serve the purpose of two or three. 



This method of growing grapes was practised several years 

 ago at a place a few miles north of London, where I filled the 

 situation of under-gardener. The house was 45 ft. long, and 18 ft. 

 wide : a pit occupied the centre, formerly used for fruiting pines. 

 The flue entered the back of the house at one end, and was 

 carried round the front and under the back pathway into the 

 chimney at the same end the flue entered. Open wooden work 

 was placed over the back flue to walk upon. 



Vines were planted in the front pathway next the pit, one 

 under each rafter: these produced the first crop of grapes. We 

 began forcing them in the beginning of Februar}'^, and they were 

 ripe by the middle or latter end of June. Those for the second 

 crop were planted outside the house, in the front. They were 

 introduced into the house in the latter end of March or beginning 



