JULY, 1907.] THE ORCHID REVIEW. 207 
are O. triumphans, O. luteopurpureum, O. cirrhosum, O. Hallii, some of 
the early-flowered O. crispum, and many of the hybrids. When it is 
essential to thoroughly shake a plant out at this season, in order to give it 
a fresh start, more than ordinary care must be exercised to see that it is 
kept well sprayed over and heavily shaded, as we now expect very hot and 
bright weather. 
Much can be done towards increasing stock of good varieties by cutting 
away the leading bulb when the new growths are about two inches high. 
This should be done carefully, working out as many as possible of the 
roots attached to the leading bulb. Pot lightly in a small receptacle, using 
a compost of equal parts of peat and moss. When the roots have well 
filled the pot, give it a shift into a larger size, using the compost previously 
advised, and pot much firmer. I have many times found the young break 
has developed into a bulb, even larger than the one cut off with it. When 
this is done do not disturb the old plant till a new break is made, also 
keep it well on the dry side. It is very necessary to see that this house is 
kept well charged with moisture. In situations that are very dry, and 
where the structures are lofty and airy, quite late syringings will be 
extremely helpful at this season. Also see that the ventilators are kept 
well open. We never shut off the top or bottom ventilators at this season. 
Young growths breaking away or developing ina buoyant atmosphere have 
much more substance and texture, consequently the foliage will not break 
‘over so easily, and the general appearance of the house will be enhanced. 
Few things are more annoying than to see the foliage broken over an 
otherwise well-grown plant. Those plants that are lying dormant should 
be allowed to become fairly dry at the root before more water is given. 
ONCIDIUM CONCOLOR will now be growing away and potting may be 
accomplished forthwith, using a compost of peat and sphagnum in equal 
parts, with some sand and small crocks. Ordinary pots, provided with 
holes for suspending, are good receptacles, filling them nearly half full with 
thizomes. This is a beautiful species, yet rather troublesome to keep in 
vigorous health for many years. No doubt its floriferous habit has much to 
‘do with its deterioration, together with the many back bulbs usually seen. 
When repotting take away all those not required, two behind each leading 
‘one being ample. No plant should be allowed to flower if it has not made 
a fairly good bulb. Afford a position in the warmest part of the Cool house. 
Water should be sparingly afforded for some time after potting. 
Coax juGcosus.—Another beautiful species will be ready for potting 
when the young growths have made a fair start, using a compost of two- 
fifths peat, the same of sphagnum, to one of leaf soil, with some sand and 
small crocks. This plant grows well with us in the Cool of Odontoglossum 
house, treated in the same way as Odontoglossums. 
