36 
ing in their centre an apparently empty sac, free all round 
except at the base; while the space between the sac and the 
sides of the vesicle is filled with a very pale yellow fluid, in 
which are suspended myriads of spheroidal molecules of in- 
finite smallness, having a peculiar motion, as if carried along 
by a general flow round the vesicle of the fluid in which they 
lie. It is probable that this motion is a mere modification of 
that which seems universal in the fluid of the hairs of plants ; 
but want of leisure has prevented my examining it with more 
attention. No doubt all this complicated apparatus is for 
the purpose of elaborating the honey that is secreted in the 
cup of the flower of Rigidella. The whole phenomenon is 
exceedingly well worth the attention of some skilful micro- 
scopical observer. 
It is only necessary to add, that the following words 
must be introduced into the generic character of Rigidella. 
** Petala 3, nana, antheriformia, marginibus involutis, supra 
glandulosa et melliflua, in fundo perianthii." 
65. SOLANUM betaceum. See no. 61 of the miscellaneous matter of this 
volume. 
Mr. Martin Moyes, of the Durdham Down nursery near 
Bristol, informs me that this plant has fruited with him for 
several years, and that it is when in fruit very ornamental. 
Last year it bore about thirty berries, which ripened in Sep- 
tember, and hung upon the branches till the spring. Two 
which he was so obliging as to send me were of a rich 
purple colour, the size and form of a hen's egg ; and had a 
very agreeable sub-acid taste. It is probable they would 
really form a good addition to that class of vegetable produc- 
tions from which sauces are obtained ; for they were free from 
the peculiar animal flavour of the common Tomatoe, while 
they possessed all its succulence, with the addition of a mild 
and pleasant perfume. 
66. BRASSIA verrucosa. 
At the last meeting of the Horticultural Society in 
Regent Street this beautiful plant was exhibited by Messrs. 
Rollissons of Tooting. As it is intended for one of the plates 
in Mr. Bateman’s “ Orchidacez of Mexico and Guatemala,” 
it is only necessary here to state that it is a plant of a par- 
ticularly graceful habit, and that the flowers are of a clear 
