176 DEVELOPMENT OF THE OVULUM 
the order, are exalbuminous ; the deficiency being supplied 
by a high degree of development of the plumula. 
Of the seven exalbuminous Monocot. orders, H are polypetalous, a proportion very 
nearly equal to that which occurs among polypetalous Dicotyledons, the number 
i i " à 
of = genes orders g 64, of Persas 
proportion is in favour of albumen in Apetale in the ratio of. Alb. 20, 
iu. 12, or 13 to 1; and in Achlamydes it is created to Alb. 5, Exalb. 4, or 
wi nearly 2 to 1. 
e proportion n favour of definity among polypetalous albuminous orders 
rather more than 
Perig. Defin. ... 20 gees Indef. 6G: S uber DL 
Hypog. Ditto, .... 22 a ditto i 19. din w 
—— 
T. se wi n Maure aa 
Hence as the proportion is otherwise so much = favour of definity in Monopet. 
and Monocot. albuminous orders, we may assume the existence of some con- 
nection between definity of stamens and the existence of albumen 
There does appear to be a bias in f. r. superum, with 
albumen, that is, if we take the ales. of the orders, Among polypetaion al- 
buminous orders, the proportion in favour of a free ovary is 3 to 1. 
Polypet Suse 

Super. e ovii aia s ERE ak ieee 13 
Either super, v Inter. Soke onan ees elie 1 
Free or inf. "Ron Se e EE vi se 50 
Among monopetalous albuminous orders, the proportion is rather more than 2 
onopetalæ. 
Super, calyx, | .... ie: seus Sass Cece 14 
Infer. er. eee etes "2 "^^ eres .... 30 
Either, .... Sane ees M Dog vis 2 
46 
And in monocotyledonous, the proportions are nearly equal. Taking the same 
e preponderance in favour of ovar, superum, and albuminous i is 
bh 
ber more than 2 to 
Monocotyledones. 
Rupetotnlysyis soci eps Ups S 13 
Infer: is eels ss Sous wis dea 14 
27 
I believe that the future existence of albumen may be ascertained by examining 
the ovulum, and that its presence is linked with a membranous embryonary sac. 
The distinction between these is very evident: take for instance the embryo 
sac of Composite which is cellular, and that of Santalaceew, The only exception I 
know of to this occurs in Loranthus, but this is so parodoxical in every point 
wen the evolution of its seed, that it can scarcely be said much to invalidate 
Both 

think 
gynism, except in Seid are ts not neces linked with the existence eot 
