EXPERIMENTS IN HYBRIDISATION, &c. 107 
of first hybrids extends beyond the differences caused by using different 
varieties as parents, because we often get considerable variation among 
hybrids raised from the same seed-capsule. 
How then is this variation to be explained? A careful analysis of 
hybrids of Paphiopedilum seems to give a clue to this problem, as the 
following condensed analyses show. (Compare also those given under 
the heading of “‘ The Inheritance of Specific Characters.’’) 
(1) (a) Paphiopedilum x Lathanianum I.—A hybrid between P.. 
Spicerianum (Pfitz) and P. villosum (Pfitz), first raised by Mr. Latham, 
of Birmingham. Jn form, the parent P. Spicerianum is prepotent in the- 
lower sepal and lip, while P. villosum predominates in the leaves ; in all,. 
favouring P. Spicerianum as 20:15. Jn colour, P. Spicerianum prepon- 
derates in the bract and upper sepal, while P. villosum prevails in the- 
scape and lip; altogether favouring P. Spicerianum as 18:17. The- 
Fie. 26. Mages PIT (E Fic. 28. 
P. SprceRIANUM. P. x LatHamianum II. P. vILLOsuUM. 
Primary Hybrid with its two Parent Species. 
whole hybrid, in form and colour, favouring P. Spicerianum as 38 : 382,. 
or 54°2 per cent. (Fig. 19.) 
(1) (0) P. x Lathamianum II.—Another variety of the same parent- 
age. In form, the parent P. Spicerianum is prepotent in the leaves, 
lower sepal, and lip; in all favouring that parent as 23:17. In colour, 
P. Spicerianum predominates in the upper sepal and staminode, while 
the other parent, P. villosum, preponderates in the scape and petals. 
altogether favouring P. villosum as 17:15. The whole plant, in form 
and colour, favouring P. Spicerianum as 38: 34, or 52°7 per cent. 
(Fig. 27.) 
(1) (c) P. x Lathamianum ITI.—A third variety of the same parent- 
age. In form, P. Spicerianum is prepotent in the scape, while P. 
villosum predominates in the habit of growth, ovary, lower sepal, and lip ; 
in all favouring P. villosum as 21:18. Jn colour, P. Spicerianum pre- 
