NOTICES OF BOOKS. 125 
The incisions are repeated daily in dry weather, and the longer it 
continues the more Manna is obtained. The stems are left uninjured 
on one side, so that the Manna runs down the smooth bark more 
easily. The next year the uninjured side is cut. The Manna cannelata 
is obtained from the upper incisions, more than forty of which may be 
counted on one tree. The sap there is not so fat as below, and con- 
sequently dries more easily into tubes and flat pieces. After the 
anna has been removed from the trees, it has further to be dried 
upon shelves before being packed in cases. The masses left adhering 
to the stems after removing the inserted leaves are scraped off, and 
constitute the Manna cannelata in fragmentis. Cannelata, Can. in 
fragm. and Capace are collected at the same time from one stem—the 
more Cannelata, from the younger, and the more Capac@or Gerace, from 
the older part of the stem. In Sicily the latter is designated in sorte, 
and is probably the most active. Dry and warm weather is essentially 
requisite for a good harvest.” 
NOTICES OF BOOKS. 
PnawTE FENDLERIANJE Nove Mexicanse,—an account of a Collection 
of Plants made chiefly in the vicinity of Santa Fé, New Mexico, by 
Augustus FENDLER; with Descriptions of the New Species, Critical 
Remarks, and Characters of other undescribed or little-known Plants 
from surrounding Regions; by Asa GRAY, M.D., (communicated to 
the Academy of Philadelphia.) 
This is the account of Mr. Fendler’s Plants to which we alluded in 
our February No. p. 62, and of which a copy has just reached our 
hands. It is, like every thing that emanates from the pen of that 
talented American botanist, Dr. Asa Gray, a very first-rate production : 
this, the first part, a 4to of 116 pages, extends only to the end of 
Composite. We must refer to the Memoir itself for the many new 
genera and species, fully and accurately described, and content ourselves 
with a few extracts relative to the route of Mr. Fendler, communi 
by Dr. Engelman, who further prepared enumerations of the Cactacee, 
Cuscutinee, Asclepiadee, Euphorbiaceae, &c., of this collection. 
“ Mr. Fendler left Fort Leavenworth on the Missouri, in August, 
1846, and followed the well-beaten track of the Santa Fé traders to 
the Arkansas, then up the river to Bent’s Fort, where the westerly 
course was changed for a south westerly one. Opuntia arborescens was 
