220 NOTICES OF BOOKS. 
is here meant; and, if so, the consumers in Europe will be glad 
to know, that, spite of the destruction of trees, occasioned by the 
reckless mode of collecting the juice, the “ Binua” (people of the 
country,) who for some time past have been withdrawn, by the 
demand for it, from their usual pursuits, smiled at our authors 
ignorance in suggesting the probability of its being exterminated. 
“It is only trees arrived at their full growth (sixty to eighty 
feet high), or at least at a very considerable age, that repay the 
"labour of felling them and extracting the gia; while those of all 
inferior sizes, which they are compelled to leave, will keep up the 
2 
race. 
Descriptions et Figures des PLANTES NOUVELLES ET RARES DU 
Jarni Boranique de /" Université de Leyde, par W.H. De 
VRIESE. 
The indefatigable and talented De Vriese proposes to publish a 
volume in five livraisons folio, under the above title, beautifully 
coloured, at the price of seven florins each livraison. The first of 
them is announced as having appeared, with the five followmg 
plates. 1, Ficus fulva, Beinw.; Zamia muricata, Willd.; 3, Fn- 
cephalartus Altensteinii, Lehm. ; 4, Ditto, mas. ; 5, Planche con- 
tenant les analyses. ' 
might easily do, only by sending us well-dried specimens, as, indeed, Mr. Oxley has 
done of the so-called Gutta Percha of Singapore ; and we can now say with confidence 
that the Gutta Percha of Singapore, whether the provincial name be correct or not, — 
is the Isonandra Gutta figured and described in the sixth volume of the London — 
Journal of Botany, p. 331 & 463, t. 17. But we are completely adrift respecting the 
Taban. Is it the Gutta (or Gittah) Percha of Singapore, described by Mr. Oxley? 
for it is more than probable that several analogous substances have been called Gutta his 
Percha, that of Borneo, for example, which is considerably different from that of aoe 
Singapore, at least in appearance. In our first notice of Gutta Percha, mention 13 
made of Jintawan as being used mixed with the Gutta Percha, to give it flexibility. 
This Jintawan, we are informed by Mr. Brockedon, is a kind of Caoutchouc, and i8 | 
probably, like the other Caoutchouc of commerce, yielded by different plants. We “à 
sure the Journal of the Indian Archipelago will do its best to solve our difficulties. — — 
