466 



were the property of the Council. Such an entire misunder- 

 standing on his part, that nothing was to be published either in 

 England or New Zealand regarding the expedition without the 

 Council s sanction, is deeply regretted. 



I am. etc., 



A. A. Dorrien-Smjth, 



Captain . 



k, S a ^ U i T La tex.-In Der Trope tip flanznr for November, 



1W8 (!•_' Janrg., Nr. 11, pp. 520-1), D. Sandmann gives an account 

 ot a new method of obtaining caoutchouc from latex. 



The separation of the caoutchouc is carried out in the following 

 way. Freshly tapped latex, with or without admixture of water, 

 is strained, poured into dishes, and well mixed with a small 

 amount ot a liquid preparation of certain acid fluorine compounds, 

 winch brui- about slow coagulation, and at the same time destroy 

 all putrefactive germs. The mixture is allowed to stand for some 

 hours, and the rubber, having by this time collected at the surface, 

 can be removed from the dishes, after which it only requires to 

 be freed from water by pressure, and is then ready for transport. 



The fluorine-preparation is sold under the name of «• Purub," 

 and its use is protected by patents. 



It is claimed that this method has much to recommend it, since 

 it is very simple, and has been found to yield rubber of decidedly 

 good quality, equal in value to the best kinds of Para rubber. 



™i w fr « me , tl \° d h ftl )een chiefl y a PP lie <* to the extraction of 



will «i IT i he lat f X ° f ? evm > but ' no doubt > simil *r experimente 

 * ill shortly be made with the latex of other plants. 



List of Botanical Staffs (Appendix IV.) : Errata and Addenda. 



A}, 11 ' $** 8 1n £po P ni to P> M *T. W. Main read *J. W. 

 4\ K Long " 0m t0p f '"' #J ' W ' Campbell read 



Page 101, under Dublin add 



Trinity College Herbarium : 

 Keeper - 



Page 106, under Gold Coast add 



Director of Agriculture - W. 



Pjge 110, under Singapore add 



Assistant Superintendent *T. W. Main 



Wr 



