DESCRIPTION OF PLATE X. 



Experiments at Biggs, Cal. (Bordeaux mixture.) Fruit gathered from row 15 of 

 the experiment block of the Rio Bonito orchard in thesummerof 1895. The forniiila 

 for the spray used on this row was pounds copper sulphate, 15 pounds (luickHine, 

 45 gallons of water. The 10 trees of the row matured 4,851 pounds of tine pea(-hes, 

 which are shown in the picking boxes. The trees of the adjoining unsprayed row, 

 No. 14, l)ore only 928 pounds. The value of the fruit matured on row 15 was $60.02; 

 on row 14 it was $13.24, a net gain from spraying 10 trees of $4(5 aftei- allowing for 

 the cost of spraying. This gain resulted after more than one-third of the i)eaches 

 had been thinned from the sprayed row, while none had been thinned from row 14. 

 The total number of peaches set by the trees of row 15 was 21,272, by those of row 



14 it was 2,855. The comparative average net gain shown by the spray used on row 



15 was 619 per cent. 



