8 



» 



this beetle. It is of interest to point out that a similar mode of 



attack — by means of an internal parasite — has been tried against 



the olive fly Dacus oleae, Rossi, in Italy without very encouraging 

 results. 



Artificial means therefore appear to offer the only safe way of 



combating the pest, and numerous forms of poisonous solutions 

 have been tried. 



In Western Australia cyanide of potassium or arsenic with 

 orange 'juice was placed in saucers about the fruit trees, but 

 neither of the poisons appeared to be efficient either in attracting 

 or poisoning the flies (v. Journal of Agriculture, Western 

 . 'strnlia, Vol. 10, 1904, p. 27). In the following year a 

 report of further experiments is given in the same Journal 

 (Vo 11, p. 115), in which McDougall's insecticide tree wash was 

 us' k I for spraymg orange trees with very satisfactory results. The 

 trees were sprayed four times, about once a month, and the 

 mixture used was H gallons of wash to 10 gallons of cold water. 

 J he cost of this treatment was moderate and no injury resulted to 



he fruit from its employment. It appears, however, that the pest 

 in the case of this experiment was the Queensland fly Tephritis 

 llirom. Another mixture to be used for spraying is suggested by 



nlL 1 "-? C ?¥A g ricMltural Journal^ xlv., 1904, p. 660, 



5 iC^nf f t lb ' ^ Senate 0f lead ' 25 & ll °™ of ™ter, and 

 enco nZncf f-!^ 7? reSUlts from this mi **™ have been 

 T !,h W * 8 'i an ? W ° f 1 1 Dterest t0 note that Professor Berlese in 

 of L mS~ fi Ived a s ° mewh *t similar compound for the destruction 



The sol t^T?^ If C n may a S ° 1)rove of value a ^ ainst the Ceratitis. 

 cent & ^l 11 ^' 31 percent,; molasses, 65 per 

 rl tired for 1 ti™ ^ ; &rsenite of P otash ' 2 P er cent When 



222b? dS^^tff*?"*. TJ ich can be sto ™ d indefinitely, 

 mu tedwW at the rate of 10 parts of the mixture to 90 parts 



i^aSnfS ZnXtl7Z G T m r ? an that 8Uggested b * 



the trees but SA i the arsenite of potash might scorch 



BeriSS? experts °h XZT ""ft* has attended Prof eS8or 



should be giWTte tvJ l W ° Uld 8eera that tnis Bolntion 

 found in the CW 5K*2» ^V CCOUnt of the method will be 



Bv far thl * L m1 J ° Urnal ' VoL xxx " 19 <> 7 > P- 193. 



the Fru t Fly Co ufe?^ JfV*** destructive agent against 



Secretarv of State for the P^' bee \ br ° Ught to our notice & the 

 following co^wnd^np ?? ^ ™\° haS forw ^ded to Kew the 

 and the So^SfcL^*!* * be ^rnor * St. Helena 



The Governor of St Hptpva ^+i, tt 



L* jwL a e HlGH Commissioner 



for South Africa. 



My Lord, 



The Castle, St. Helena, '. 



August 26th, 1907. 



information l^°Tl E2K22T??, f ° r ^ r **«*¥* 



^^ernment from the £^21^? ^ Ceived b ? thi * 



™> eminent Entomologist of Tasmania 



