Marcu, 1913.] THE ORCHID REVIEW. 83° 
plants to Messrs. James Veitch & Sons in April, 1905, which flowered a 
Coombe Wood in the following June. Its history was then given in our 
pages (xill. p. 194), and soon afterwards a figure appeared in the Botanical 
Magazine (t. 8070). A year later it was exhibited at the Temple Show, 
and received a First-class Certificate. A considerable number of plants are 
now in the Arnold Arboretum. It may be added that, owing to the width 
of the block, we were unable to insert the name at the base. The picture, 
however, should be viewed from the side. 
CALENDAR OF OPERATIONS FOR MARCH. 
By J. T. BARKER, The West Hill Gardens, Hessle, E. Yorks. 
Wit the advent of March the season of growth is rapidly approaching,. 
and there will be plenty to occupy both the hands and the minds of those 
who have the care and attention of a large collection of Orchids. 
TEMPERATURES.—Owing to more favourable conditions outside, the 
temperatures may now range a few degrees higher all round, both night and 
day, than those given in the January number. The atmospheric conditions 
must naturally follow the temperatures, and more moisture may now be 
safely used. A humid atmosphere may now be maintained in all the 
divisions, and the conditions must be conducive to free and healthy growth. 
The sun’s power at this season is often considerable, and sufficient to warm 
the houses during the daytime without the aid of fire heat, but sufficient 
artificial warmth is requisite to maintain the temperatures at night. 
During periods of bright sunshine a hot dry atmosphere must be avoided, 
as these conditions always bring in their train thrip and other pests which 
do irreparable damage. 
VENTILATION.—The greatest care must be exercised during the present 
month, and often, instead of opening the ventilators too wide, it may be 
advisable to use the blinds to keep the temperatures down to their normal 
level. Fresh air must be admitted on all favourable occasions in every’ 
department. I have never yet seen plants thrive in stuffy, badly ventilated. 
houses, but care must be taken that no draughts are caused, for one is as 
much of an evil as the other. 
WATERING must still be done with discretion, for growth is not yet 
active, and the smaller amount of fire heat necessary to maintain the 
temperatures, and the greater amount of humidity in the houses, entails less 
evaporation from the compost. Care should be taken that the plants. 
actually require water before it is applied tothem. The usual caution must 
be displayed in applying water to all newly-potted plants, as this, to my 
mind, is often the cause of many plants not doing satisfactorily. 
SHADING, that was put into position as advised last month, will now 
come into general use, but must not be applied to excess, and the plants. 
