31 
me at the delay, but informs me that the work was completed under his 
supervision shortly after the receipt of the material. Professor Ringer, 
however, has never succeeded in obtaining from the gentlems who 
made the experiments a detailed report upon them. He has now been 
contained any alkaloid or glucoside, and the conclusion was, therefore, 
arrived at that it was inert. Physiological esperimente ө entirely con- 
firmed this view, as large doses were used without any effect. This - 
entirely confirms the results obtained in 1881. 
5. 'The inertness, which now seems to be established, of the Malayan 
Java, the sap of that tree yields a very powerful heart poison. It is 
possible that the Upas of the Malay peninsula is an innocuous race, 
different from that of Java. I ea to discuss the whole subject in 
an early number of the Kew Bulle 
m, &e. 
(Signed) У. T. THISELTON Dyer. 
Sir J. Е. Dickson, K.C.M.G 
CLXXXVI.— KATH, OR PALE CUTCH. 
In the Kew Bulletin for October, 1889, an account was given of the 
source and manufacture of Gambier. This is sometimes called Pale 
atechu. 
It must not be confounded with a substanee manufactured in India 
a latter, when met. with in commerce, is an earthy-looking light 
brown substance, consisting of cubes about an ineh each side, more or 
less A enun Cutch, on the other hand, is met with in dark brown 
masses, hard and brittle on the surface and at first softer within, It 
breaks easily when dry with a shining granular fracture. 
It is, however, curious that there is a form of Cuteh w hich a good 
deal approximates to Gambier. This is called Pale Cutch; and it 
is the subject of the present article. 
The excellent ое of the Economic Products of India which 
is in course of publication by Dr. George Watt, oe the authority of 
name, and that "E South India the pida was first exported, 
