jan. — mar. 1857.] Peruvian Bark-tree. 



287 



little of what has been done by means of botanical gardens in the 

 Netherlands, and by one private person, Mr. J. Willink, in the 

 cause of this weighty matter, although those endeavours alone 

 would not, in our opinion, have attained the object of the importa- 

 tion. 



" From the Botanical Garden at Amsterdam the Professor Mi- 

 quel sent several Quinquina plants to Java. The results of the 

 sending out of a Quinquina-tree to Java in 1847, under the name 

 of Cinchona alba, were very favourable. This tree, after having 

 blossomed at Java, was called there Cascarilla Muzonensis, Wedd., 

 or Cinchona Muzonensis, Gaud. Mr. Teysmann occupied himself 

 with the management of this tree, which is a shrub, and quickly 

 obtained from it more than a hundred plants. 



" To promote the chemical investigation of this sort of Quinqui- 

 na, a few branches were sent to Mr. Host van Tonningen, then apo- 

 thecary at the Government Laboratory at Batavia ; an analysis of 

 which, on account of the small quantity of bark, was not easy. 

 There was no Quinine in it, but a resin which unmistakably had the 

 smell of Quinquina resin, and deserved further inquiry as soon as a 

 larger quantity of the bark should be obtained. He determined to 

 make a second analysis, when the trees should be older, and he 

 should have a larger quantity of the bark.* 



" We remark here, that till now it is not known at what period 

 the alkaloids develop themselves ; and we may expect that a fur- 

 ther analysis of the bark of this sort, furnished by the justly-cele- 

 brated Botanical Garden of Amsterdam to Dutch East India, will 

 afford us a new subject of information. We may not omit to 

 mention that, for our chemists in Dutch East India, a new field of 

 inquiry is opening, which may be of great importance to the very 

 difficult, and as yet imperfect, chemical history of Quinquina barks. 



" From the Botanical Garden at Amsterdam, besides the exports 

 made by order of the Minister, plants of Cinchona Calisaya were 

 successively sent to East India,— as in April, 1851, six plants; 

 December, 1851, three plants; July, 1852, four plants. Mr. Wil- 



* The result of the inquiry of Mr, Rost van Tonningen was published in the Nat, 

 Tydschrift (Batavia, 1852). 



