WEST AFRICAN TRYPETIDJi:. 171 



[Probably tbe most effective remedy for tbe £ruit-fly pest is tbat devised 

 by Mr. C. W» Mally, Entomologist for the Eastern Province, Cape Colony 

 which aims at destroying the adult flies by means of a sweetened poison, 

 which is very lightly sprinkled over the trees that are liable to attack. The 

 spray fluid recommended by Mr. Mally; after many experiments, is : — 



Sugar 2ilbs. 



Paste Arsenate of Lead . . . . 3 oz. 

 Water 4 gallons. 



The liquid is applied with an ordinary garden syringe having a very fine 

 spray attachment. Only a very small quantity should be applied, a pint to 

 a pint and a half being sufficient for a large peach tree. Fuller details will 

 be found in the Cape Agricultural Journal for November 1909 ; and as an 

 indication of the practical value of the remedy, it is there stated that 

 "a severe outbreak of the pest in a commercial peach orchard was brought 

 to a sudden and practically complete halt. The infestation of the fruit on 

 tl:e treated trees fell from over 50 per cent, to less than 1 per cent., while 

 that of untreated trees a few hundred yards away increased until practically 

 every fruit was involved." — Ed.] 



