8 MISCELLANEOUS PAPERS. 



The Bordeaux mixture used consisted of 6 pounds of copper sulphate 

 (bluestone) and 6 pounds of fresh stone lime to 50 gallons of water, to 

 which was also added 4^ pounds of commercial resin-fishoil soap. The 

 addition of this soap has been found to be indispensable, as Bordeaux 

 mixture will not spread over and adhere satisfactorily to the glossy sur- 

 face of the cranberry leaves and fruit without it. Heretofore this soap 

 has been made as it was needed for use. Its manufacture was not 

 an altogether pleasant operation. Now that the soap is being manu- 

 factured and placed on the market at about 3 cents per pound, it is 

 cheaper and much more convenient to purchase it than to make it. 



SPRAYING AND ITS RESULTS. 



The sprayed plats were numbered 3, 5, 0, 7, and 9, the plats between 

 Vjeing left as checks. Plats 3 and 7 were sprayed five times, as follows: 

 May 19, June 22-23, July 14-17, July 31-August 1, and August 15-17. 

 On September 8, accurate counts were made of all the diseased and 

 sound berries on small areas, showing tlie average condition of the 

 berries on the sprayed plats; also of equal areas, showing the average 



Fig. 1. — The apparatus used in the cranberry spraying experiments. 



condition of the berries on the check plats. Plat 3 gave 3.23 per cent 

 of rotten berries, plat 7 gave 8.8 per cent of rotten fruit, check plat 2 

 showed 91 per cent of rotten fruit, and check plat 8 gave 91.53 per cent 

 of rotten berries, giving an average of a fraction over 6 per cent of rotten 

 fruit for the sprayed plats and a little more than 91 per cent for the 

 unsprayed plats. On these -two plats it will be noted that the first 

 application was made on May 19, when the vines had but just com- 



100— I 



