ON THE CULTURE 



prevent the rain, in case any falls, from coming 

 on the plants. 



It has been thought advisable by some to con- 

 struct hot-houses in such a manner as that air 

 might be admitted by the back wall ; while others 

 have been of opinion that it acquired a more bene- 

 ficial temperature by being conveyed through a 

 green-house into the . hot-house. To the first 

 method I object, upon account of the northern 

 quarter from whence the air immediately comes : 

 and to the last, on account of its passage through 

 the green-house, which I conceive may affect its 

 purity. I do therefore recommend, in preference 

 to all other contrivances, the admission of air 

 between the glasses immediately over the plants. 



General Observations on "watering the Pine-apple 



Plant. 



From the stated times already laid down for the 

 watering of the Pine-apple plant, a person not 

 well skilled in its management might be led into 

 an error, in regard to the proper quantity that 

 ought to be given. Therefore it becomes ne- 

 cessary for me to say something more upon this 

 head. 



In the first place, I disapprove of ever giving 

 a great quantity of water at one time to the Pine- 

 apple plant in any stage, or at any season; if 

 too much is given, it will cause the mould in the 

 pot to run together, after which, when it be- 



