OcToBER, 1913.] THE ORCHID REVIEW. 325 
overdose during the summer does not do anything like the same amount of 
harm, as moisture quickly evaporates at that season. Nothing is more 
detrimental to the health of an Orchid than to have a mass of chilly damp 
moss round its roots, and for this reason I always prefer to have the 
sphagnum well mixed together with the other ingredients of the compost, 
as it is then more evenly distributed and does not get into a sodden mass. 
Damping down will now have to be restricted to twice a day, when 
sunny weather prevails, and only once should fogs and continuous rain 
occur. The roller blinds may now be removed and stored away in a dry 
shed for the winter, as no further shading will be necessary. 
The principal treatment this month will consist in carefully going over 
every plant, sponging its leaves with tepid rain water, cutting away any 
dead or decaying portions, and in keeping a sharp look out for insect pests. 
Cymbidiums will now probably be throwing up their long flower spikes, 
at least such varieties as Tracyanum, Winnianum, early Lowianum, and 
some of the beautiful hybrids of insigne, notably Doris, Gottianum, 
Schlegelii, and Pauwelsii. These plants should be placed in as light a 
position as possible, watering them well and giving once a week a dose of 
weak diluted cow manure. 
It is now, in my opinion, too late to attempt the repotting of Odonto- 
glossums, and therefore any which were not done last month had better be 
left over until the following spring. A plant of this genus, if repotted now, 
has not the necessary amount of time to become properly re-established 
before the winter sets in and often fails to recover itself until the bright 
days of spring commence, and, besides causing the cultivator much worry, 
several months of growth are wasted. 
During the winter months it will be found a good plan to erect a shelf a 
few inches from the roof glass at the eaves of the house, and to place here 
any small seedlings and also weakly plants, where they will benefit from 
obtaining all possible light. Special care, however, must be taken to avoid 
a chill when the plants are so close to the glass, and it may be advisable to 
remove them during frosty weather. 
—_—>0<2>—_—. 
THE WALLICHIAN HERBARIUM. 
THE last issue of the Kew Builletin contains an important account of the 
Wallichian Herbarium, which was originally presented to the Linnean 
Society of London by the Court of Directors of the East India Company, 
and which has since been held in trust by the latter for the general benefit 
of science. The Herbarium contains an extensive series of Indian plants, 
including a large number of Orchids, which were described by Dr. Lindley 
in his Genera and Species of Orchidaceous Plants. A demand for additional 
space led the Society to desire that the collection might find another home, 
