— 44 — 



and 54,7 °/ citronellal; dis^o 0,8890; soluble in its own vol. and 

 more of 80 per cent, alcohol. 



From an article by A. W. G. Bagshawe x ) we learn that the tsetse- 

 fly (Glossina palpalis) which is so much feared as the medium by 

 which sleeping sickness in conveyed, has a pronounced dislike of 

 of citronella grass; hence an extension of the cultivation of this grass 

 would afford an additional means of combating this dangerous insect. 

 Seeing that the fly's aversion from the grass is probably entirely due 

 to the essential oil present in citronella grass, it would perhaps be 

 advisable to make experiments as to how far it would be possible to 

 protect man and beast from the tsetse-fly by means of citronella oil. 



Clove Oil. The report of the British Vice consul in Zanzibar 

 contains the following tables completing the statistical data for 1908. 



Exports of cloves 



in the 



years 1 



906 to 1 



908: — 







1906 



1907 



1908 



1906 



1907 



1908 





cwts. 



cwts. 



cwts. 



£ 



£ 



£ 



United Kingdom 



23667 



29455 



20389 



61042 



74179 



40005 



British India . 



44610 



56542 



61312 



1 18 840 



143 077 



121 944 



Netherlands 



13801 



8500 



5003 



37155 



19687 



9447 



U. S. A. . . 



6410 



9843 



5841 



15932 



20404 



12305 



Germany . . 



34297 



49367 



29438 



92840 



1 18 064 



59H9 



France . . . 



5230 



3741 



8205 



13822 



8391 



15050 



Austria-Hungary 



1344 



625 



759 



3522 



1405 



1456 



Italy .... 



1469 



1688 



538 



3 685 



4103 



926 



Other countries 



4054 



2870 



2219 



9798 



6811 



4708 



Total 134882 162 631 133704 356636 396 121 264960 



Deliveries during the last 14 years: — 

 Zanzibar Pemba Total 



frasilah 



frasilah 



frasilah 



1895 









146397 



391460 



537857 



1896 









1 1.9 787 



237090 



356877 



1897 









90676 



250954 



331630 



1898 









60363 



308485 



368848 



1899 









139320 



344764 



484084 



1900 









49 180 



248 935 



298 115 



1901 









49977 



294709 



344686 



1902 









58438 



235106 



293 544 



1903 









146308 



172811 



319119 



1904 









36550 



387846 



424396 



1905 









91448 



274893 



466341 



1906 









189 198 



209 21 1 



398409 



1907 









I79I37 



460051 



639188 



1908 









141 850 



299952 



441 802 



1 ) Third Bulletin of the Sleeping Sickness Bureau. According to the Lancet 

 of 6th March 1909. 



