66 orchids: now to grow them successfully. 



IXTERMEDIATE HouSE. — The temperature, day with sun, 65°; day 

 without sun, 58° to 60° : night, 58° ; morning, 53°. 



Keep tlie temperature up in cold weather and temper the 

 atmosphere by the admission of fresh air, given chiefly through the 

 bottom ventilators, and damping down the floors, &c., once or 

 more a day as may be requisite ; and during mild weather a few 

 degrees may be added to the temperatm-e, but avoiding any 

 approach to a stuify, close atmosphere. 



When in smoky towns fogs are common, and during the time 

 they prevail the atmosphere should be kept rather more moist than 

 usual ; and the Evergreen Orchids, especially those which should 

 be kept dry, such as Cattleyas and LseKas, should then not be 

 too dry at the roots, or the foliage would probably suffer and 

 prematurely drop, greatly weakening the plant. Immediately 

 after a dense fog it is most advisable to look over the plants and 

 sponge the leaves with clear rain water, in order to remove the 

 sediment deposited thereon. 



The Warm, or East India House. — The temperature, day ivith 

 sun, 70"; day ivithout sun, 65°; night, 63°: morning, 58°. 



This heat should be maintained if possible with a little bottom 

 air, and moisture appHed, by damping down the paths, «S:c., 

 according to the amount of fire heat employed Cypripediums 

 may be repotted ; Calanthes which have done blooming should be 

 placed on a shelf close to the glass and kept dry. Use tobacco 

 powder on all plants when thrip is found, and keep a sharp look 

 out for red spider on the young fohage of Dendrobiums, and 

 any Dendrobiums in bud or in flower may be kept a little moist 

 at the roots. 



February, 



Cool House. — With increased sun heat the day temperature of 

 this house may rise three degrees, continuing the same care in 

 ventilating, watering, and the detection of insects, and always 

 having a sufficient amount of fire heat and no more. The repotting 

 of Odontoglossum Alexandrae and its alUes, as they go out of bloom 

 and begin making new growth, may be proceeded with, and pick 

 over the surface moss of others which are in good condition, and 

 top dress with fresh sphagnum and peat. 



