APRIL, 1912.] THE ORCHID REVIEW. 109- 
FOREIGN EXHIBITORS. 
ARENDS, Mons. G.; Nurseryman, Ronsdorf, Barmen. 
DieTrRICcH, E., Chateau du Val Duchesse, Bruxelles. 
GRAIRE, Mons., 5, Rue St. Fuscien, Amiens. 
JULEs, C. HYE DE Crom, 8, Coupure, Gand. 
LAMBEAU, F., Rue du Fosse aux Loups, 39, Bruxelles. 
Manpa, W. A., South Orange, New York. 
Maron ET Fits, Brunoy, France. 
MULLER, ABEKEN, G. H., Scheseningen. 
PEETERS, A. A. ET Fits, Ancienne Chaussée de Meysse, Laeken,. 
Bruxelles. 
REGEL, Dr. E., Botanic Garden, St. Petersburgh. 
VincKE, A. H. & L., Scheepsdaele, Bruges. 
VUYLSTEKE, CH., Loochristi, Gand. 
This great exhibition will take place in the spacious grounds adjoining. 
the Royal Hospital, Chelsea. His Majesty the King will open the exhibition 
in person at noon on May 22nd, and it will remain open until May 30th. 
INVITATIONS TO JURORS. 
Invitations have just been issued to upwards of 350 specialists in every 
branch of horticulture to officiate as jurors at this great show. In awarding 
the prizes, British judges in every group will have the assistance of one or 
more foreign colleagues. R. HOoopER PEARSON, Hon. Press Secretary. 
ceieg eee 
THE AMATEUR’'S COLLECTION. 
By C. ALwyn Harrison, F.R.H.S. 
CooL House. 
SLIGHTLY higher temperatures may be maintained this month than were: 
advised in the March article, and with this increase in warmth, more air 
may be admitted, both through the top and bottom ventilators. It should 
be always carefully borne in mind that the occupants of a Cool Orchid 
house delight in pure fresh air, and as much as possible should be given 
throughout the year, although regulating the quantity admitted, so as not 
to allow the thermometer to register below the required height. 
A few general notes on the watering of cool Orchids may be of value to 
the beginner. From now until the beginning of June, all plants which are 
in active growth, or in bud or flower, will require a good dose about three 
times a week, but for those which are at rest, twice a week is sufficient. Of 
course, the above hints must only be regarded as a rough guide, and less 
than the quantity suggested above will be needed if April prove cold and 
rainy. If fine and warm, fire heat may be dispensed with in this house at 
the latter end of the month, but should cold and dull weather continue,. 
artificial heating should still be employed. 
