•'^4 Sckntyic Intelligence. 
21. II^perslene.<<*->^Dr Webster has discovered Ivyperstene in 
abundance in the vicinity of Boston. — Id. 
22. Plumhago from North Carolina. — It is of a very fine 
quality, and appears well adapted both for crayons , and pots. 
It occurs a few miles north of Raleigh, and exists in great quan- 
tities. It has long been used in the vicinity as a pigment. We 
are indebted for this information to the Honourable Judge John- 
son, of the Supreme Court of the United States, and also for the 
most beautiful yellow-ochre, from the waters of the Oconee in 
Georgia, and for a handsome fine-grained greyish-white marble, 
well polished. This is from the waters of Broad River in South 
Carolina. Both the last are abundant. — -Id. 
23. Rose Quartz of Southhury.,\ Connecticut. — This occurs 
abundantly, forming a large rock, about eighteen miles from 
.New Haven. It is of a lively agreeable colour. — Id. 
BOTANY. 
24. Dr Hooker'' s Exotic Flora. — We are happy in being 
able, at length, to announce the appearance of the First Part 
of Dr FIooker’s Exotic Flora^ the publication of which it seems 
was for some months unavoidably delayed. This work is des- 
tined to include, as our readers are probably well aware, and, 
as the notice on the wrapper informs us, ‘‘ Figures and De- 
scriptions of such Plants, not natives of Great Britain, as are 
cultivated in gardens, or, in defect of these, of such as can be 
faithfully represented from well preserved specimens in the Her- 
baria. In all cases, preference will, of course, be given to such 
individuals as recommend themselves by their beauty, their his- 
tory, their novelty, or some remarkable or little known charac- 
ters in their flowers or fruits.” The greatest pains, we are 
assured, will be taken in delineating the different parts of fruc- 
tification, so as to exemplify, and render familiar to the botani- 
cal student, the generic, as well as specific character, and the 
Natural Order to which the plants belong ; and if we may be 
allowed to judge from the plates in the Flora Londinensis^ and 
in various others of this authoFs publications, these dissections 
will form one of the most important features in the, book, so 
that, if a plant be occasionally represented, which has already 
appeared in works of a similar nature, we may yet expect to 
ifxave it rendered valuable by the analyses of its flowers and fruit. 
