NOTICES OF BOOKS. 561 
knowledge. The work is accompanied by seventeen neatly executed 
plates, of which, eleven are Oaks, four Hickories, one Nettle tree, 
and one the Tupelo tree. : 
We should have been glad also to have seen a synopsis of the 
genera and species, by which their identity could have been at 
once determined. 
Tuckerman, Ewn. A. M.; LicugNEs AMERICA SEPTENTRIONALIS 
Bxsiccati. Fasc. I. et IT. Cantabrigiæ, Nov. Angl., 1847. 
Assuredly one of the most promising and enthusiastic botanists 
at this time in North America, is Mr. Ewd. Tuckerman of Bos- 
ton. Scarcely was our pen dry after writing the brief notice of 
the “Synopsis of Lichens of the northern United States and British 
America,” than we were gratified by the appearance of the two 
(in one) beautiful fasciculi of dried specimens published by the same 
author. The specimens are excellent, and they form a volume 
of fifty species; the descriptions of which are of course given in 
the synopsis. 
The same parcel also brought us a Memoir from the same 
author, extracted from Silliman’s Journal, on some interesting 
plants of New England, in which the specific distinctions of seve- 
ral new or dubious species, are treated of with much good sense 
and judgment. 
But the work in which Mr. Tuckerman is now particularly en- 
gaged, is a Monograph of the Genus Potamogeton, a genus re- 
quiring elucidation no less than Cuscuta, which has been so ably 
illustrated by another North American botanist, Dr. Engelmann. 
Botanists generally cannot do better than send to Mr. Tuckerman, 
specimens of Potomogetons from all parts of the world, or the 
loan of such as require to be returned. 
Pappr, Dr. L.; List of SovrH AFRICAN INDIGENOUS PLANTS, 
used as remedies by the colonists. Cape Town. 1847. 
Under this modest title Dr. Pappe has given a catalogue, with 
