THE. CAMPHOR-TREE OF BORNEO. 205 
. larly down upon it, if the faces were perfect and symmetrical*. But 
` the crystals are very far from being symmetrically formed, and from 
this circumstance the true form is not apparent, and it has been ascer- 
tained by measurement of the angles.” : 
“The crystals of mellite are modifications of a square prism, while 
those of this new gum are modifications of a rectangular prism." — — 
* [ think that crystals of a red gum have been found in Brazil wood, 
but I do not know their form.— Professor Miller remembers having 
seen the name of Borneo camphor in Frankenheim's ‘System der 
Krystalle.'—I think it right to communicate to you all I can relative 
to this interesting substance." Z.J. B. 
For the description of the genus and species of this tree I have 
only to refer back to p. 36 e£ seg.: the original paper is accompanied 
by an excellent figure (though there also perfect flowers are wanting), 
on folio size, and I should hardly have desired to publish one from 
our own specimens could I have flattered myself that the valuable 
scientific journal in which De Vriese's paper has appeared had the 
circulation in our country which its merits deserve. Our fruit, not 
quite mature, but well preserved in aleohol, exhibits some slight dif- 
ferences from that of De Vriese. We find a nut, rather than a “ three- 
valved capsule;" at least none of the pericarps of our specimen exhibits 
sutures or lines indieating dehiscence. In the forward state of our 
fruit we find one perfect large seed and five abortive ovules near its 
summit, all pendulous. Mr. Bentham, who kindly examined a fruit 
and compared it with the drawing, would define it thus :—‘ From an 
examination of the fruit it would appear to me evident that the ovary 
was three-celled, with two ovules in each cell collaterally affixed to the — 
central axis and pendulum. As the fruit swells one ovule alone is : 
enlarged so as to occupy the whole of the cavity, the dissepiments x 
detach themselves from the sides, and, without growing, remain vith E 
by the following notes :—‘ The primary form a right - 
gure corresponds to the right rhombic prism of Haüy. There vtae x -— 
yet investi — Angles between normals to the faces: m m 77 or s 
ms 42 97; ry’ : ss 102; s s” 37 28. PP T d 
842 27; rr 44 45; rr’ 56 20: ss 1 88 drawn and the angles computed po 
