598 ON C0NVENIENCIE5, &C. BOOK l„- 



The ice-house should be formed in a dry knoll near water, 

 with double or very thick walls, a well at bottom, and a drain 

 on the principle of the syphon, which, while it admits the water 

 to escape, does not admit air to enter. It should have double 

 doors, and both must be closely fitted. The eart^ over it 

 should be of considerable thickness, and should be planted 

 with lowgrowths and shrubs, either with or without trees. The 

 lowgrowths alone on the very top of the ice-house are prefer- 

 able, as their roots do not penetrate the masonry, and as their 

 tops, by forming a close covering upon the surface, stagnate 

 the air, and prevent the access of heat, better than trees alone, 

 which leave the surface of the ground in a naked state. 



Tennis-courts, and bowling-greens, are more properly 

 included under the conveniencies of a residence, than under 

 gardening, or picturesque improvement. Their formation is 

 simple, and their effects sometimes interesting, as at Dundas 

 Castle, Woburn, &c. See Switzer's Ichnographia Rustica. 



Some other buildings might be mentioned ; but none of any 

 importance are omitted, except cottages, and some other build- 

 ing, which, as not being properly the conveniencies peculiar to 

 a residence, are already treated of, either under Architecture or 

 some of the branches of Husbandry. 



