1 56 THE USES OF PLANTS. 



1842, sent home specimens and gave a lecture on the 

 subject before the Society of Arts, whose gold medal 

 he received. The trees from which it is obtained 

 range from 6 or 10 N. to 10 S. lat, and from 100 

 to 120 E. long., and, being more easily so used, have 

 been felled in great numbers since 1845, ten trees 

 only yielding about 130 Ib. of gutta. This was the 

 amount sent over in 1844. In 1857, 4^ million Ib., 

 in 1876, 10 million, and in 1882 over 8 million Ib. 

 were imported, whilst the slackening of the supply has 

 already considerably enhanced the price. In 1881, 

 G. E. C. Beauvisage, published, at Paris, his ' Origines 

 Botaniques de la Gutta Percha,' in which he refers to 

 Dichopsis Gutta, Benth., the * taban ' of the Rion Archi- 

 pelago, 'percha/ 'derian,' ' dadu,' 'seroja,' * tambaga,' 

 and * balam,' to Isonandra macrophylla, De Vriese, the 

 second quality, ' putih/ to /. Motley ana, De Vriese, 

 the inferior * kotian,' and those of various other kinds 

 from the Banka Islands to other species of Isonandra. 

 The latest botanical account of the plants yielding 

 Gutta Percha, however, is that of Burck.* He states 

 that Palaquium Gutta, Burck. ( = Dichopsis} no longer 

 exists in a wild state, that most exported now being 

 * taban simpor/ PayenaMaingayi, while the best quality 

 is ' taban marah/ Palaquium oblongifolium, Burck. He 

 re-describes all the forms, and suggests as suitable 

 P. Borneense, Burck, P. Treiibii, Burck, P. Treubiiv&r. 

 parvifolium, Burck, and Payena Leerii, Burck, to which 

 may be added { Gutta jelutong,' Dyera laxiflora, Hook, 

 fil., from Selangor.f 



* Ann. du jard. hot. Buitenzorg, v (1886), p. i. ' Pharm 

 Journ., 3 xvii (1886). f ' Kew Report,' 1881. 



