THE ORCHID’ REVIEW. 313 
the exact amount of water these Cattleyas require during their so-called 
period of rest, as it is only by long practical experience and sound judgment 
that thorough success is attained. 
The dwarf-growing Lelia pumila and its varieties, Dayana and prestans, 
are very charming little plants when in flower. All of them should be 
grown in small shallow pans, and during the summer months should be 
suspended close to the glass in the cool house ; but now they are flowering, 
and finishing their growth, the intermediate house will be the best place for 
them. A small quantity only of peat and sphagnum is requisite for the 
plants to root in, and this should always be kept fairly moist, while from 
the commencement of growth, and until it is completed, liberal supplies of 
water are necessary. 
Such stately and strong-growing plants as Vanda tricolor and V. suavis, 
that have lost their bottom leaves, or that require more root-room, should 
be taken in hand at the end of the present month or the beginning of next. 
I have always found when any disturbance at the roots of these plants is 
necessary that this is the best time of the year to set about it, as far less 
loss of foliage is likely to accrue than when the operation is performed in 
the spring. Full directions as to the best method of re-potting the above- 
mentioned Vandas, and their cultural requirements generally, will be found 
in the Calendar of Operations for January. 
The following Orchids that have been growing in the cool house during 
the past summer should now be placed in the coolest part of the inter- 
mediate or Cattleya house, where they will get abundance of light and 
air :—Masdevallia tovarensis and all Masdevallias of the Chimera section, 
Odontoglossum Krameri, O. nzvium, O. cirrhosum, and Miltonia vexillaria. 
The East Indian and Cattleya houses must still be well ventilated on all 
warm days, and abundance of air must also be given to the cool houses 
whenever the external air is above 50°. 
The night temperatures for the month should be as follows :—East 
Indian, 65° to 70°; Cattleya, 60° to 65°; cool houses, 50° to 55°. 
ODONTOGLOSSUM LONDESBOROUGHIAN UM. 
In reference to the culture of his plant, as given at Pp. 282 of our last 
issue, Mr. Horner writes that he keeps the plants as cool as possible during 
the summer, from 50° to 60° when the weather permits, though the 
temperature rises considerably with sun-heat. Abundance of air is always 
given, and shading is avoided as much as possible, though the blinds are 
let down from about eleven o’clock till four whenever necessary. woud 
drainage is considered very essential, and careful watering, or the foliage is 
liable to spot. It is grown with a mixed collection of cool Orchids, and 
