By Mr. Isaac Oldaker. 



be necessary to leave three inches space between the pots, 

 where the plants are large, that the air may pass freely be- 

 tween them, and thus keep off the damp, which, when it 

 prevails, destroys the plants ; but if they are so small that 

 they do not cover the tops of the pots, then the pots may be 

 placed nearer, it being always expedient to leave three inches 

 space between each plant. 



When the plants are adjusted, the lights must be put on 

 the frames. When the heat of the atmosphere is above 

 50° the lights are pulled entirely off in the day-time, and at 

 night are raised, by tilting behind six inches, for the ad- 

 mission of air. When the external temperature is below 50°, 

 the lights should remain on, but then air must be admitted 

 behind, in the day time. When the atmosphere is below 

 40°, the admission of air is not necessary. At no time after 

 the Violets begin to blow must the lights be entirely taken off, 

 except for the purpose of watering and cleaning the plants, 

 and of gathering the flowers, as exposure to the sun and wind 

 will cause the flowers to be of a pale colour. When the wea- 

 ther is cold, and likely to be frosty, the glasses should be 

 covered at nights with one or more mats ; the thickness 

 of the covering must be in proportion to the severity of the 

 weather ; in hard frost, two mats, as well as litter, will be re- 

 required, for the pots must never be suffered to freeze, if it 

 be possible to prevent it. The coverings must be removed 

 in fine days. In March and April as much air as possible 

 may be given, if the weather is fine. 



The pots must be frequently examined, at all times when 

 the weather will permit ; weeds and decayed leaves must be 

 then cleared away, and a little water given where the mould 



