Marcu, 1923.] THE ORCHID REVIEW. 85 
may be done. This Ccelogyne does not need too frequent root disturbance. 
But specimens that have overgrown their receptacles, and where the 
‘compost is in a bad condition, should be turned out of the pots or pans, the 
dead roots removed, and the back pseudo-bulb cut away, leaving three 
behind each growing point. They may then be made up again into shapely 
specimens. Ccelogynes are not deep rooting plants, and in consequence 
pans six or nine inches in diameter are preferable to pots for this class of 
Orchid. A mixture consisting of osmunda fibre, good fibrous loam and 
sphagnum moss in equal proportions, with a sprinkling of finely broken 
potsherds is a suitable rooting medium. In re-making the plants into 
specimens, a large number of growing points are required; these should be 
arranged evenly over the pan in a manner so that the centre of the plant is 
furnished with growing leads. It may be necessary to use wire pegs to hold 
the pseudo-bulbs in position until the roots are re-established in the 
‘compost. After re-potting, give the plants a position in a warm house, 
apply water sparingly, but spray them overhead once or twice each day, 
more especially during bright weather. Where a number of these plants 
ate grown, a few should be re-potted each year. This is preferable to 
‘disturbing the whole collection at one time, as Coelogyne cristata does 
not flower so freely the first year after re-potting. Other Ccoelogynes, such 
as C. Massangeana, C. Dayana and C. Lowii, on account of their pendulous 
flower, scapes, are best grown in teak wood baskets furnished with wire 
handles, and suspended from the roof rafters. Others, such as C. aspersa, 
C. tomentosa and C. Mooreana, grow best in pots or pans. Partial shade 
is needed by all Ccelogynes, and at no time should the soil be allowed to 
‘become excessively dry. 
TuHuNIAS. Towards the end of this month it will be necessary to re-pot 
the Thunias. These plants should be potted annually and the work should 
be done as soon as they have commenced to grow afresh. These plants 
‘should be shaken out of the old compost and the dead roots shortened to 
‘within an inch or two of the base. The most convenient way is to, plant 
‘SIX or seven of the strongest stems together in a seven inch pot, which 
‘should be nearly half-filled with clean crocks, place a thin layer of turfy 
doam over these, the rest of the space being filled with the compost, which 
Should consist of good fibrous loam, osmunda fibre, and sphagnum moss, 
cut up moderately fine, in equal proportions, with sufficient crushed crocks 
and silver sand added to ensure porosity. Pot moderately firmly, placing 
the bases of the young growths on the compost, and secure each pseudo- 
bulb firmly to a neat stick. Place the plants in the lightest position 
Possible in the warmest house, with the tips of the old stems near the 
Toof glass. The young growths revel in moderate sunshine, but during 
the middle of the day when the sun’s rays are very powerful they should be 
