74 THE ORCHID REVIEW. [Marcu, 19¢3.. 
mentioned by name, we may now indicate which are their respective: 
portraits. The numbers correspond to those given on the blocks. The 
varieties are:—Czsar (3), Dakini (4), Stormberg (5), Hurstii (5), maculatum 
(II), punctatum (21), and burbagense (25). It may be added that Dakini 
and burbagense each received an Award of Merit from the Manchester 
Orchid Society on January 24th, rgo1, but, as remarked at page 75 of our 
last volume, ‘‘a dozen really good things could easily be selected.” 
It may be observed that the named varieties are for the most part 
hose which flowered first, but a few others may eventually be selected 
for such distinction. It would be interesting to know whether any of 
them agree with forms already named in other collections. 
A summary of Captain Hurst’s conclusions respecting Mendel’s. 
principles must be deferred till our next issue. 
CALENDAR OF OPERATIONS FOR MARCH. 
By JOHN Mackay, The Gardens, Highbury, Birmingham. 
Now that the season is advancing, the plants will be greatly aided by the 
increasing length of the days and by sun-heat. This latter will necessitate: 
getting all blinds and shading into working order without further delay- 
The plants generally will require to be protected from the hot sun during 
midday, for the concentration of its rays will soon cause disfigurement to- 
foliage, and at this time of year one cannot be too careful in this respect. 
At the same time, on no account allow the blinds to be down longer than 
is really necessary. I do not agree with permanent shading of any sort.. 
It excludes the light, which is a very necessary element in successful 
Orchid culture. The best system of shading is the ordinary roller blinds. 
These should be raised about six inches above the glass, by having a frame- 
work of wood or iron fixed on the roof for the blinds to roll on. By this. 
means plenty of light and air is allowed to pass between the glass and 
blinds, which will greatly assist in keeping down the temperature in hot 
weather. 
During this month the fluctuations of temperature will no doubt be 
great, owing tothe changeability of our climate. The houses should be 
carefully regulated according to the weather; should this continue mild,. 
more moisture may be kept in the atmosphere, and ventilation should be 
gradually increased whenever practicable. 
In the warm houses, where such plants as Vandas, Aérides, Angrzecums,. 
&c., have been potted or top-dressed, a slight rise in the temperature by 
night may be allowed, but in other departments the temperatures previously 
advised should be followed. 
In most collections the principal work now requiring attention is 
