90 
Edith Chick on Torreya Myristica. 
Epicotyl. I was unable to find any trace of centripetal xylem 
in the Epicotyl. The stem is clothed with leaf bases, and the stele 
is composed of leaf-trace bundles which keep their identity and are 
to be seen in connection with their own particular leaf bases. This 
is particularly well seen as the apex is approached. 
Immediately above the cotyledonary node the stem bears scales ; 
these give place above to foliage leaves and the transition between 
the two is gradual and complete. I examined the scales to see if 
centripetal xylem were to be found there, but neither here nor in 
the foliage leaves, either of the seedling or of the adult, was any 
trace to be seen. In the scales an occasional transfusion-element 
was present in a ventral position, in the leaves there was a con¬ 
siderable development on the flanks of the bundle, but none in a 
central position. 
To summarise: the important points in the seedling of 
Torreya myristica would seem to be the retention of certain 
primitive characters. In the anatomy of the cotyledons we have 
such a primitive character as the presence of centripetal wood, 
while the lobing and adhesion of the cotyledons is a feature which 
Torreya has in common with other primitive genera, such as 
Zamia and Ginkgo. 
The somewhat exceptional method of transition from root- 
structure to that of the hypocotyl and cotyledon-petioles, is also 
of interest. 
In conclusion I should like to take this opportunity of thanking 
Professor Oliver for his help and the interest he has taken in the 
work. 
DESCRIPTION OF FIGURES ON PLATES VII. and VIII. 
ILLUSTRATING MISS CHICK’S PAPER ON THE SEEDLING OF 
TORREYA MYRISTICA. 
PLATE VII. 
Fig. i.—Seedling from Kew, 16 months old ( x £). 
Fig. 2.—Seedling from Orton, 18 months old ( x f). 
Fig. 3.— Seedling from Orton, 19 months old ( x T a s ). 
Fig. 4.— Transverse section of the cotyledon-bundle about half way 
up from seedling in fig. 2 (x 142). 
Trf. transfusion tissue. 
Cp.x. centripetal xylem. 
Px. protoxylem. 
X l . centrifugal primary xylem. 
x" 1 . secondarj' xylem. 
Fig. 5.—Longitudinal section of cotyledon-bundle in same region as 
fig. 4 ( x 125). Same lettering. 
