Cyanide Cas Remedy for Scale Insects. 4o1 



The Califoiuian ordinary, or 75 per cent., schedule dosjge is approxi- 

 mately the same for large trees as that shown in our table, but in 

 general it is increasingly stronger as the size decreases, and it is 

 very considerably stronger for small trees. According to the Californian 

 table trees under twelve feet high should get two or three times 

 as much as our table indicates. The Californian dosage for the larger 

 trees is easily calculated. The " full schedule" number of ounces of 

 sodium cyanide given for a tree i.s three-fourths the number of feet 

 over the tree multiplied by the number of feet around the tree 

 divided by one hundred. The number of ounces ordinarily used for 

 red scale is three-fourths the figure thus obtained. Thus the Califor- 

 nian full schedule number of ounces for a tree 40 feet aiound by 

 40 feet over is f x 40 x 40 -f 100, or 12 oz., and the ordinary red 

 scale dose is three-fourths this figure, oi' 9 oz. 



SrA.NUAKD Uu.sactE Table. 



