130 PROCEEDINGS OF THIRTY-THIRD FRUIT-GROWERS ' CONVENTION. 



of carrying infection and that it was best not to begin until the 15th. 

 So there is no work being done, although Mr. Carnes, Mr. Maskew, Mr. 

 Whitney, and the County Commissioner there, have got a plan all out- 

 lined. They have inspected all of these 999 lots; they have got a map 

 drawn showing the boundaries of the detected part, which is very small. 

 That is all to be defoliated and all the other 20,000 trees in Oroville are 

 to be fumigated; so we have worked out a thorough system of checking 

 every tree. Every tree in the 20,000 will have a number attached to it 

 by a tag. If you go to Oroville you will find our little office there and 

 at that office you will find samples of all the white flies in the section. I 

 think there are anywhere from five to twenty different species there, all' 

 mounted. I will say with regard to the Marysville fly, that after an 

 examination by our best experts they are able to find the fly on only 

 four trees, which have been destroyed, so practically it seems that the 

 fly has been exterminated here, though we can not say for sure. Now 

 I will ask Mr. Stabler to read Mr. Kellogg 's paper. 



The Secretary pro tern, then read the paper of Prof. Vernon L. Kel- 

 logg. 



SOMETHING WE NEED. 



By PROF. VERNON L. KELLOGG, of Stanford University. . 



Two years ago I had the privilege and pleasure of reading a short 

 paper to the "Fruit- Growers' Convention on the subject of the relation 

 of pure science or scientific investigation to the interests of the Cali- 

 fornia orchard men. In that paper I tried to point out the final depend- 

 ence, in the long run, of successful horticulture on scientific investiga- 

 tion, and suggested the importance of a recognition on our part of this 

 fact, and pointed out in general terms the advantage we might gain by 

 acting on the basis of this recognition. 



In this brief paper I wish to show that horticulturists elsewhere have 

 recognized the value of scientific studies and .have acted to their own 

 advantage on the basis of this recognition. And I wish to indicate, in 

 specific terms, how we, too, may act advantageously on this basis. 



California's annual horticultural product is worth approximately 

 seventy-five million dollars. Its farm product is worth about as much 

 more. Each year injurious insects lessen the possible fruit product by 

 a variable fraction : one fifth is the general estimate made by economic 

 entomologists for the country at large. California insects will surely 

 not allow their figure to be lower than the average. She spends, this 

 State of California, practically no dollars a year for definitely directed, 

 specific, competent, original investigation of the life history and habits 

 of these ever-present, active enemies of her fruits. 



New Jersey's annual fruit product is worth something less than a 



