12 



rum insect powder tends to keep the adult insects away, but the former, 

 at any rate, have no effect on the larvae when they have once com- 

 menced their attack on the clothing. 



Before putting clothing, woollens, or furs into store it is advisable to 

 treat them with carbon bisulphide. An ordinary tin trunk can be 

 used if newspapers are spread over the top and the lid kept tightly 

 closed. Pour half a wine glass full of the liquid on the surface of the 

 clothing, spread the papers quickly and shut tight. Should tie box be 

 opened at intervals afterwards, naphthalene balls or insect powder 

 serve to keep away a fresh infection. The liquid will not injure th.e 

 clothing nor leave any stain. 



Household Insects — Should it be desired to destroy cockroaches, bed 

 bugs or fleas in a house, it should be treated on the lines laid down for 

 disinfecting a granary, (page 11) 



A suitable time for this treatment would be an occasion when the 

 house is to be shut up for thr.'e or four days or longer. Individual 

 rooms coulfl be treated, if desirable. Stringent precautions to avoid 

 ignition of the vapours or their inhalation by human beings are of 

 course necessary. 



Insects in Tobicco, Museum Specimens and Books can be readily des- 

 troyed by treatme t in a suitable closed vessel with carbon bisulphide. 

 If the receptacle be tight, one ounce of bisulphide will suffice for each 50 

 cubic feet of space. The treatment should last for "iG hours. 



Authorities utilised 



Carbon bisulphide aa an Insecticide by W. E. Hinds. 



Farmers Bulletin, 145 U. S. Dept. of Agriculture. 

 Inseoti jiflFectiug Tobacco by L. O. Howard. 



Farmers Bulletin 120 U. S. Dept. of Agriculture. 

 Household Insects of the U.S.A., by F H. Chillenden. 

 Chemistry of the Garden by H. H. Cousins. 



Macmillan & Co., Ltd. 



THE EUOALYPTS IN SOUTH AFRICA.* 



There are probably more Eucalypt plantations in South Africa than 

 in any other country, and at the present rate of progress there will 

 in a few years, be more Eucalypt plantations in South Africa than in 

 all the other countries combined. There is no group of trees in the 

 warm temperate regions of the world that can produce hardwoods of 

 good quality so rapidly and so cheaply as Eucalypts, and their cultiva- 

 tion bids fair to become the central factor in the forestry of these 

 regions. At this moment train-loads of Eucalypt timber are pouring 

 into South Africa, Eucalypt sleepers displacing metal and creosoted- 

 pine sleepers. South Africa will soon be paying out something like a 

 quarter of a million pounds yearly for Eucalypt timber imported for 

 railway t-leepers and mining timber (little or none of this, by the way, 

 E. Globulus) so that any delay in the prosecution of Eucalypt planting 

 in South Africa would be a most expensive proceeding. It is note- 

 worthy that, so long as the Eucalypt is properly suited to the climate, 

 it seems to grow better in South Africa than in Australia, the expla- 



* From letter in Nature, 6 Aug., 1903, by D. E. & E. Hutchins. 



