io THE ORCHID REVIEW. (January, 1gio. 
looked as if they would never become established. Then the compost was 
changed, and now consists of about equal parts of peat and loam, with a 
good sprinkling of tufa broken up to about the size of peas, with the dust 
also included. The pots are also drained with tufa, and a few heads of 
sphagnum are pricked into the compost after potting. The plants are 
grown in the same house as P. insigne, and are watered freely during the 
summer, and syringed in the afternoon during hot weather.” The result of 
this treatment is certainly excellent, and Mr. Wrigley remarks that “the 
plants are the picture of health, and show no signs of ever becoming the ‘ long 
lost Orchid’ again.” The variation is apparent in the figure, but much 
more so in the original photograph, which had to be reduced. 
A photograph of a group of P. x Maudie is also sent, showing 25 plants 
with 27 flowers and buds. It is said to be a very free grower, and blooms 
from every little growth. Several plants of the variety magnificum are 
included, and are much finer than the type. Mr. Wrigley has now eighteen 
plants of this variety, all grown from a small plant with three leaves. 
A PRACTICAL ASPECT OF MENDELISM. 
Now that the mists which have hitherto surrounded Mendelism have been 
dispelled, and we recognize in it a simple discovery—or rather rediscovery— 
of segregation, which is only another name for our old and very familiar 
friend, the dissociation of mixed character in hybrids, it may be well to 
glance at one or two practical aspects of the question. The term rediscovery 
is used advisedly, for segregation—and in peas—was not originally discovered 
by Mendel. As long ago as October 15th, 1822, a paper was read before the 
Horticultural Society of London by Mr. John Goss, entitled “On the 
Variation of the Colour of Peas, occasioned by Cross Impregnation ” 
(Trans. Hort. Soc., ser. 1, v. pp. 234-236), in which the following occurs :— 
“In the summer of 1820, I deprived some blossoms of the Prolific blue of 
their stamina, and the next day applied the pollen of a dwarf Pea, and of 
which impregnation I obtained three pods of seeds. In the following spring, 
when these were opened, in order to sow the seed, | found, to my great 
surprise, the colour of the Peas, instead of being a deep blue, like their 
female parent, was of a yellowish white, likethe male. Towards the end of 
the summer I was equally surprised to find that these white seeds had 
produced some pods with all blue, some with all white, and many with both 
blue and white Peas in the same pod. 
‘‘ Last spring I separated all the blue Peas from the white, and sowed 
each colour in separate rows; and I now find that the blue produce only 
blue, while the white seeds yield some pods with all white, and some with 
both blue and white Peas intermixed.” 
A “ Note by the Secretary ” follows (pp. 236-237), which states ‘“‘ Previous 
