'66 TRRE PI.AXTTXG IX KIIODKSIA. 



return on the capital expended at the end of, say, ten years in 

 the shape of stope-timbering. etc., and, of course, we must not 

 forget 'that the thinnings and prunings will provide a consider- 

 able income for firewood long before this period is passed. 



I trust that these few remarks may be of some use in 

 showing that, although our territory has heen greatly denuded 

 •of its natural woodlands, we may confidently look forward to 

 the time, in the not distant future, when Rhodesia will derive 

 a very considerable advantage from the practical results which 

 should be the natural outcome of the experiments carried out 

 at the founder's instance in the Matoppos. 



EUCALYPTUS OIL IN ORE CONCENTRATION — 



A recent regulation of the Health Hoard of Australia requires 

 eucalyptus oils for therapeutic purposes to contain at least 50^ 

 of eucalyptol. This, it is said, excludes phellandrene oils, which 

 ^ive the best results as a reagent in ore concentration. A liroken 

 Hill ore concentrate, containing 47^ zinc, 10% lead, and 1 5 oz. 

 of silver, is obtained with a consumption of 8 oz. of eucalyptus 

 oil per ton of concentrate, and the demand iov phellandrene 

 •eucalyptus oils has, in consequence, greatly increased. 



GRANTS FOR RESEARCH. — A joint ammiittee* of 

 the Royal Society of Soutli Africa and the South African Asso- 

 ciation for the Advancement of Science was recently appointed 

 for the purpose of considering the ])ossibilities of establishing a 

 fund for the furtherance of scientific investigaton in Southcr?i 

 Africa. This committee has reported favourably on the project, 

 and has recommended to the respective Councils of the two 

 Societies that the funds out of which such grants are to l)e paid 

 should be administered by the President and Council of the 

 Royal Society of South Africa, and that all payments should be 

 subject to the sanction of a General Committee consisting of 

 the President and Council of the Royal Society, four members 

 nominated by the President and Council of the South African 

 Association, two members nominated by His Excellency the 

 ( iovernor-General in Council, and one nominated by the Univer- 

 sity of the Cape of Good Hope, together with representatives of 

 the various Societies in South Africa devoted to the interests of 

 special branches of Science. It is further recommended that the 

 General Committee so constituted should proceed to nominate 

 two Boards to be associated with it in its decisions: one of these 

 boards is to deal in particular with the Physical Sciences, and the 

 ■other with the Biological Sciences. It was further recommended 

 that each applicant for a grant should be required to furnish 

 information as to the nature of the research in which he desires 

 to engage and the scientific results expected to follow therefrom, 

 the amount required and particulars of the proposed expendi- 

 ture, whether he has received any previous grant from any source 



