350 



three jars of fruit. This material represented breeding work ac- 

 compHshed en route. 



The following" morning, October 28th, I assumed charge of the 

 insectary and commenced the multiplication of all these new 

 species with the material which had been prepared in advance by 

 you. The work has been going on continually since then and we 

 are multiplying the species as rapidly as the insectary conditions 

 permit. There is no doubt about the multiplication of Tctni- 

 stichus in large numbers as the new generation of parasites 

 developing within the pupae of the fruit fly can be seen in a living 

 condition through the pupal skin. The multiplication of the two 

 Braconid species may be attended with some difficulty, as in 

 Teneriffe I was bothered with. the old difficulty of faulty mating. 



The Tctrastichus is the species which Silvestri discovered in 

 W'est Africa but lost on the way home. It was considered by him 

 as one of the most important parasites of Ccratitis capitata in 

 West Africa, and its introduction is especially recommended in 

 his recent report. The tw^o Braconids are similar in kind to the 

 species now so successfully multiplying and spreading in the Kona 

 district of Hawaii and about Honolulu, and ought to be very 

 valuable in the control of the fruit fly. Both of them are larger 

 than Opius Jiiiiiiilis and have much longer ovipositors. 



I regret that 1 cannot give positive information jnst now in 

 regard to their ultimate establishment here, but the work as far 

 as it has gone gives every promise of success. 



Yours very truly, 



David T. Iullawav, 

 Field Entomologist Board of Agriculture and Forestry. 



NoTK : — Since the above report was written I have succeeded 

 with the multi])licati()n of one of the above species of Braconids 

 in the insectar\-. D. T. V. 



The timber industry represents 37 per cent of the annual pro- 

 duction of wealth in r'>ritish Columbia. 



In addition to his own Are detective system, the supervisor of 

 the Palisade national f(»rest, Idaho, was notified of each fire by 

 from five to ten difl'erent local settlers, who thus showed their co- 

 operation in working for fire supj^ression. 



The I 'inta nionntains of I 'tab, include(l within the Wasatch. 

 L'inla, and Ashley national I'oresis, should become a favorite rec- 

 reation region, because of thi- man\- small lakes within depres- 

 sions scooped out by glacial drifts. Seventy such lakes can be 

 counted from Rcid's peak, and one jiarticular township, 36 miles 

 square, contains more than a hundred. 



