Double-roofed Hot-houses. 535 



tables, for the food of its inmates; with fruit, so desirable to all ; 

 and will be ornamented also with a choice small collection of 

 flowers. In addition to which, a love of plants and flowers 

 being universally diffused, every parish may in time have its 

 little garden society, and its meetings for the distribution of 

 prizes for the best vegetables, and fruits, and flowers, among 

 its members. 



Jpril 26. 1832. James Stuart Menteath. 



In England, the Society of Friends, or Quakers, have ex- 

 cellent free schools; one near Wigton, in Cumberland, another 

 near Leeds, a third at Croydon, and a fourth near Bristol. 

 To each of these, I understand, a garden and farm are at- 

 tached, on which the children work. In Ireland, the place I 

 cannot recollect, a school to teach agriculture on the best 

 principles has, within these few years, been instituted for the 

 labouring people's children. The effects, I hear, are very 

 striking ; and plots of turnips, and other symptoms of improved 

 management, are observed near it. In Switzerland, Fellen- 

 berg's school, divided into two departments, one for the rich, 

 the other for the labouring people's children, is well known. 

 There, the cultivation of the farm, and the instruction of the 

 children in agriculture, under the care of an intelligent master, 

 combine in spreading much valuable agricultural knowledge 

 throughout that country ; and I cannot see why gardening 

 might not, by means of our Scottish parochial schools, be 

 spread in a similar way among all the labouring people of 

 Scodand. — J. S. M. 



Art. VI. On the Construction of double-roofed Hot-houses at 

 Vienna. By M. Charles Rauch, Court-Gardener at Laxen- 

 burg. 



Tpie advantage of double lights for plant-houses is well 

 known in those parts of the Continent where the severity of 

 the winter renders some kind of external covering indispens- 

 able ; and in several places, particularly in Russia, they are 

 much in use. These structures have, however, lately been 

 improved by M. Seidel, nurseryman at Vienna; and a con- 

 servatory [fg. 84. section), belonging to M. Meyer, has 

 been erected at Penzing, on the following principle : — 



The front and side walls are double, or rather hollow; and 

 the space between is filled with warmed air, which is supplied 

 by a furnace or oven, constructed behind the house for that 

 purpose. Thence the heated air is introduced between 



M M 4 



