NOT£S AND tOMMENTS. 



171 



Fig. 2298. 



C. Perethecium ot apple scab with 



germinating spores, 



D. {a) Spore not swollen, 



\b) Swollen germinating spore. 



partially escaped from a ruptured ascos, and 

 {h) loose spores. 



When we consider how highly these draw- 

 ings are magnified and that these spores are 

 microscopic in size and float like particles of 

 dust in the air, it is easy to understand the 

 rapidity with which scab will spread through- 

 out an orchard, especially in moist weather, 

 for moisture is necessary to the growth of 

 the penetrative threads of the spores. 



So far, a coating of Bordeaux has been 

 found the only safe-guard against these scab 

 spores fastening themselves on the leaves 

 and fruit, but this is an expensive as well as 

 a disagreeable operation, and we are. en- 

 couraged to hope that a coating of the lime, 

 salt and sulphur spray may be equally effec- 



E. Germination of spores, _after 15 

 hours in apple leaf broth, 

 (a) spore, {b) a germ thread. 



tive, and certainly much less expensive, 

 because one application may suffice. 



The Cow Pea. — Formerly it was said that 

 '* this pea is to the South what red clover is 

 ,to the North, and alfalfa to the West,". but 

 of late it has been found that the Cow Pea 

 is of great value in all of these sections, 

 and, during the last year or two, it has been 

 s(pwn in some parts of Ontario for the im- 

 provement of orchard, land. It is sown in 

 spring about the same time with beans, in 

 drills about 2j4 or 3 feet apart, and con- 

 stantly cultivated until August 1st, when 

 the peas will occupy the ground, though in 

 some cases Crimson Clover is sown amoiig 

 the Cow Peas at the last cultivation. In 



