Juy, 1903.] THE ORCHID REVIEW. 205; 
Artificial hybrids are enumerated at the end of each genus, primary ones: 
under one of the two parents, preceded by a number, to which a cross- 
reference is given under the second parent, and a list of names, secondary’ 
and doubtful ones, alphabetically afterwards. 
Addenda to Sander’s Orchid Guide. Sander and Sons, St. Albans. 
MEssrs. SANDER have issued an Addenda, in which the crosses recorded’ 
since the issue of their Orchid Guide are enumerated under three tables, as. 
before, each occupying nine pages. The information consists of (1) Name,. 
(2) Seed parent, and (3) Pollen parent, and is repeated under each table. A 
glance at these tables, Messrs. Sander remark, “‘ will help to avoid the too: 
prevalent duplication and synonymy existing in the present nomenclature 
of hybrids.” We hope it will, but we find the hybrid between Cypripedium 
villosum and C. x Leeanum under six different names in the Addenda, and 
as it appeared under nine others in the body of the work the outlook is not 
hopeful. The hybrid between Lelia purpurata and Cattleya Mossiz 
formerly appeared under five names, now there are two additions. Or take 
hybrids not previously enumerated, and we find the crosses between 
Odontoglossum crispum and O. nobile under six different names, between: 
Leelia purpurata and Cattleya Schilleriana also under six, and between the 
last named and C. Mossiz under five. And each is repeated three times 
over, without any clue to the raiser, or to the original name. Of 
course the names originated elsewhere, and are merely brought together 
here for what they are worth. And the reader can take his choice. 
CALENDAR OF OPERATIONS FOR JULY. 
By JoHN Mackay, The Gardens, Highbury, Birmingham. 
THE principal work now will be watering, damping, cleaning, and other 
similar operations conducive to the well-being of the plants in the different 
departments. There will be few Orchids demanding attention in other 
directions, as the majority will have been either top-dressed, re-mossed, or 
freshly potted. In large collections, however, there are always individual 
plants of various species that require fresh material, and, no matter whether 
seasonable or not, these individuals should be attended to when occasion 
demands. However, the first and principal duty to be performed now is to- 
see that no plant suffers for want of the necessary liquid element, and that 
they be kept clean and perfectly free from insect pests. 
In order to aid the condition last mentioned, the houses should have a 
mild fumigation at frequent intervals, with the XL all vaporiser. With 
this preparation the plants may be fumigated, whether they be in bloom or 
not, without any fear of injury resulting. If possible a dull evening should 
