teemed and in greatest request. We have observed that the 
Delgada is very rare, and that the two last species, whieh are 
- reputed to be of an inferior quality, are easily distinguished ; 
that of No. 5 by the size and bitterness of its bark, and that 
of No. 6 by its entirely fibrous fracture. Hence it results that 
the fine Quinguina of Loxa is reduced to one of the three first 
species, or to a certain mixture of their barks, and that it may 
~ be designated by the following characteristics : Size, that of a | 
goose-quill, or nearly; thickness less than a line ; surface slight- 
dy rough and a little wrinkled with or without. circular fissures ; 
the epidermis fine, of a sallow colour more or less dark, spotted 
with lichens or mucors of a silvery or greyish hue ; internal sur- 
face smooth or velvety, of the colour of ochre bordering on 
yellow.or red; the rolling perfect, the fract cas Nie oes 
little filaments ‘on the internal part | only; ; » bitter, rathe 
‘aromatic, and styptic, without bemg disagreeable | or ‘nauseous, 
the bitterness manifesting itself gradually on mastication ; the 
smell, that which is peculiar to good Quinquinas. 
_ M. Zea thinks that a good distinction may be deduced from 
the heightening of the colour when the barks are moistened ; 
but no one can be ignorant that all dry vegetables are height- 
ened in colour when moistened, and we are of opinion that 
no useful deduction can be inate * pes a quality gf common. to ay 
vegetables. _ | re eee 
We shall specify. the chemical qualities of each bar 
state. our analyses.” 
EF i ‘Sire nay: _just observe by the way, that M. Zea believes that the authors of the Flora 
Peruviana bave done wrong in making four species of two varieties of the C. cordifolia of 
Mutis. The C, hirsuta and ovata would form, according to him, one of the two varieties, 
and the C. purpurea and micrantha the other; it is only necessary to read the descripGamy 
of Messrs, Ruiz and Pavon to see that M, Zea’s supposition is groundless, 
t 
