THE ORCHID REVIEW . 
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integument. (8) The same more highly magnified. (9) Section of same. * 
The fungus could be seen within the cells of the seed. (10) Odonto- 9 
glossum seedling (“ corin'”) 2£ months old. The fungus remained restricted I 
to the larger cells at the base. The closely packed cells above showed that I 
rapid growth was taking place. This is the region of the growing point of f 
the stem, which had already formed two leaves, (n) Further developed a 
seedling showing advance in stem growth and the beginning of root 1 
formation. (12) Section- of Vanda seedling showing the young root 8 
absorbing its way through the corm, but not entering the fungal zone, | 
(13) Section of the base of an Odontoglossum seedling showing the root a 
further developed and entering the soil. The young root was quite free m 
from fungal infection until about J inch long, when it became infected from j 
the soil. (14) Cells of fungal zone of same, more highly magnified, 
(15) Longitudinal section of an aerial root of Epidendrum showing 9 
hyphae passing through the velamen, also fungus in cortical cells of 
As the chance of the seed being infected by the necessary fungus is '■ 
somewhat remote, Mr. Charlesworth worked out a method of “ Pure M 
Culture ” based on Bernard’s investigations. The essential point being that | 
the fungus is grown in pure culture and afterwards used to infect the seed. S 
Suitable nutritive material having been placed in glass flasks, the whole is I 
thoroughly sterilised by steam heat. When cool, the fungus is introduced, * 
and after a certain period has elapsed to enable it to permeate the whole 9 
surface the seed is sown by carefully shaking a! small quantity into the I 
prepared flask, the mouth of which is then filled with cotton wool, and a .1 
suitable temperature maintained during the process of development. When* f 
the seedlings arrive at a suitable size for handling, they are pricked off into 9 
small pots and pans. On account of their clean and healthy nature, m 
seedlings raised on this principle make rapid progress, and reach the § 
flowering stage at an earlier period of their life than if grown on the old ■ 
style method. Messrs. Charlesworth also staged a series of seedling 1 
Orchids in various stages of development, fully proving the great advantages I 
of the above method. It is satisfactory to know that the Council of the « 
Royal Horticultural Society awarded a Silver-gilt Lindley Medal for their i 
meritorious work. 
Orchid Catalogue.— Messrs. Flory & Black, Slough, have just issued S 
a comprehensive catalogue of new and choice Orchids. There are about 1 
1,000 items, and in many cases duplicate plants of similar size can bo | 
offered. Plants described as having a certain number of bulbs implies that I 
all are leaved. The nomenclature adopted is that adhered to by the Royal | 
Horticultural Society. 
