\4,i Indian Museum Notes. |^ Yol. II No. 6« 



as follows : — The resin treatment was practically without value and had 

 no injurious effect on the plants ; the trees treated with the kerosene were^ 

 Auffust 2iind, somewhat yellowed and injured and the scales were all appa- 

 rently dead. Later, September 2nd, the plants had partly regained their 

 normal colour and no living scales vvere found. 



On September 5th all the trees were carefully examined, and about 5 

 per cent, of living scales were found, showing tliat many of the scales* 

 at first apparently unaffected by the earlier washings, had eventually 

 succumbed. 



It was hoped that the remaining living scales had been affected and 

 would die, but examination, September iSth, showed about the same per- 

 centno-e of healthy scales and also a few young. The trees were then 

 thoroup-hly washed with a stiff brush to remove the loosely adhering dead 

 scales and were again sprayed, October 4th, with a newly made and excel- 

 lent kerosene and soap emulsion, diluted eight times. Continuous rains 

 fell on the 6th and 7th, and on October Hth very few living and apparently 

 healthy scales were found. October 9th the application of the emulsion in 

 the same proportion was repeated, the rain having vitiated the preceding 

 -application. This spraying, we believe, affected the final and complete ex- 

 termination of the scales, but, as the trees stood these applications with- 

 out injury, to put the matter of extermination beyond doubt, and as a 

 final precaution, they were again all sprayed, and were shipped October 

 10th, 



It will be noted that the earlier sprayings were practically successful, 

 90 to 95 per cent, of the scales eventually dying; but in this instance 

 it was essential that not a single scale should escape or the work would 

 have been valueless, and hence the necessity of the additional treat- 

 ments. A further outcome of these experiments is the very evident 

 fact that the date palm is not apt to be injured even by the application 

 of very strong kerosene washes, repeated at comparatively short 

 intervals. 



Govermient of India Ce;.tial Priatiug Office.~No. 736 R. & A. D.(7T)— 27-1-92.— 1,000. 



