228 THE ORCHID REVIEW. [JULY, 1913. 
advisable to inure the plants gradually to the sunlight, otherwise there will 
be a danger of the soft, delicate growths scorching and being disfigured. It 
will also be advisable in all the warmer houses to warm the pipes slightly 
at night, which will enable the cultivator to leave a little air on at the same 
time. Orchids delight in a supply of fresh air at all times, and therefore it 
should be given on every possible occasion. 
In the cool divisions also more shading will be required in some districts 
than in others. No two growers will agree as regards the amount of light 
which should be afforded these plants. Some say they should receive 
enough light to give the foliage a ruddy bronzy hue, while others prefer 
that the foliage should always appear of a pleasing green colour. My 
advice is to try a happy medium as far as possible. In this department a 
cool, damp atmosphere must be maintained at all times, and spraying may 
be frequently done but not carried to the extent of saturating the compost. 
Every effort should be made to keep this house as cool as possible, 
especially during periods of hot weather. 
WATERING must now have most careful attention, as owing to the more 
frequent use of the syringe and sprayer, haphazard watering involves a 
danger of the compost becoming in a saturated condition. The plants 
should be allowed to become fairly dry between each operation. The most 
important of all details of plant culture under glass is the application of 
water to the roots and in the atmosphere. 
CaTTLeyas.—C. Gaskelliana labiata and many others which make their 
growth during the summer months and flower during the autumn will have 
made considerable progress, and already the pseudobulbs and flower sheaths 
are formed. It is advisable at this season to keep these plants elevated 
well up to the roof glass, so that they may receive the benefit of the light 
and air to consolidate their growths. As soon as these are mature, and the 
flowers are commencing to push through the sheath, the water supply at 
the roots may be considerably reduced. These later summer and autumn- 
flowering Cattleyas resent a super abundance of water at this particular 
season, and it is often the cause of the new bulb turning black and decaying. 
It may also cause the loss of the roots. Plants of C. Warscewiczii (gigas) 
and other summer-flowering Cattleyas, as they pass out of flower, should 
‘be placed.in cooler and drier quarters, where they may be inured to. more 
light and air to ripen their pseudobulbs. By these means the plants are 
prevented from making premature growths, and are induced to take a 
decided rest, which is to their advantage. 
La#uias.—The Mexican Lelias will be in full growth, and may have 
liberal treatment as regards sunheat and water, and every inducement 
should be given them to build up their pseudobulbs as quickly as possible. 
‘L. purpurata, and the Lzeliocattleyas, of which this species is one parent, 
