116 THE ORCHID REVIEW. [APRIL 1906. 
CatrLeyas.—The time to repot a Cattleya is when new roots appear. — 
Remove back bulbs, leaving only three or four behind the lead, and care- — 
fully trim away all dead roots, and see that the plant is free from scale, &c., 
before putting into a fresh pot. The pot should be large enough to allow — 
for another two or three bulbs, but no larger. Fill the pot one-third full of — 
rhizomes which have been cut up and well soaked, and pot firmly, keeping — 
the plant on a level with the rim of the pot. The potting mixture should — 
be used fairly moist. C. labiata, C. G i C. Percivaliana, 
C. Trianz, C. bicolor, C. amethystoglossa, C. velutina, C. Leopoldi, and 
C. granulosa will all require attention about this time. Do not pot a plant 
if it does not require it, although a little touch-up on the surface may be 
necessary. 4 
Lelia Jongheana, L. pumila and Sophronitis grandiflora may also be re- 
potted at this season ; also Trichopilia fragrans and T. suavis, when nen 
growth commences. Many Ccelogynes, Oncidiums, Epidendrums, anda 
host of other plants will require fresh material as they start into new growth. — 
Anguloas should have loam added to the compost, and should be repotted — 
on flowering. ae 
Most of the so-called deciduous Dendrobiums will now have passed out q 
of flower, and may also be repotted. Give Dendrobiums very little air 
until well into the season, and spray them overhead frequently when fine. — 
TEMPERATURES.—The night temperature should now read something ’ 
like the following :— 
Eacu InpIAN House.—63° to 68°. 
Cattleya House.—s58° to 63°. 
INTERMEDIATE HousE.—53° to 58°. 
Coot HovusEe.—51° to 53°. ; 
SHADING, &c.—I would refer readers to my last calendar for remarks 
" shading, ventilating, and damping. 
A little more warmth may be allowed if the nights are mild, and ont 
cold nights the minimum figure will be most suitable, but lower than that — 
should be avoided as much as possible. The temperatures should ; be 
allowed to rise five degrees during the day time when dull weather, gy 
with sun fifteen or twenty more may be registered in the warm houses- a 
THE GERMINATION OF ORCHID SEED.—In continuation of my remarks 
on Lelio-cattleyas in last month’s Calendar, where I got as far as securing A 
thoroughly ripe seed, the next question is how to germinate it. I a q 
present at Professor Henslow’s lecture on Parasites and Saprophytes ee 
March 2oth, and was somewhat discomposed to find that Orchids belo! 
to the latter class. Saprophytes are plants which live on decaying matt 
which seems quite a respectable thing for a plant to do, but Professor 
Henslow tells us that they are usually deficient or debased in some 
