MISCELLANEOUS PAPERS. 223 



9. The iueecticidal value of Paris green when used with the Bor- 

 deaux mixture was greater than that of London purple when similarly 

 applied. (Page 273.) 



10. More applications are required during a wet season than 

 during a dry one ; during wet weather they should be repeated every 

 7 to 10 days. (Page 260.) 



11. The results obtained this season from the application of a com- 

 bination of the Bordeaux mixture and Paris green or London purple 

 show that the use of such a combination is valuable and practicable 

 for the treatment of the apple-scab fungus and the apple-worm, even in 

 a wet season. 



12. The apple-scab is found in all regions in the United States from 

 which reports have been obtained. 



13. It is probable that none of our commonly cultivated apples 

 are in all seasons free from scab. 



14. Some varieties are much more subject to the disease than 

 others. 



15. In the preparation of the Bordeaux mixture 13.21 parts of 

 slaked lime of the composition given on page 292 are equivalent to 10 

 parts of quick-lime. (Page 292. ( 



16. More copper appears to remain in solution when slaked lime 

 is used than when the lime is fresh. (Page 292.) 



17. The quantity of copper remaining in solution diminishes 

 rapidly as the liquid is allowed to stand. (Page 294.) 



18. The action of heat is favorable to the decomposition of copper 

 compounds remaining in solution in the Bordeaux mixture. (Page 

 294.) 



19. The copper is precipitated in the Bordeaux mixture in the 

 form of hydrate, basic sulphate, and the double basic sulphate of copper 

 and calcium. (Page 295^ 296.) 



20. It is probable that the precipitated copper compounds are 

 affected by the carbonic acid gas of the atmosphere. The solvent 

 action is particularly strong when the copper is in the form of the basic 

 sulphate. (Page 29G.) E. G. Lodeman, 



Assistant in Horticulture. 



