CIRCULAR ON THE GRASSES. 245 



16. What is the best mode of renovating old worn- 

 out pasture lands ? 



17. If you have any experience in ditching and drain- 

 ing wet meadow,. or ditching or diking salt marsh, will 

 you state the result, and the comparative value of the 

 grass before and after the operation ? 



18. What are the most valuable varieties of salt- 

 marsh grasses, and how does the hay made from them 

 compare in value with good English hay ? 



19. Have you any experience in irrigating mowing 

 or pasture lands; and if so, what is the result? c 



20. Do you prefer to salt your hay when putting 

 into the barn ; and if so, what quantity do you use per 

 ton? 



21. What do you consider the best mode of destroy- 

 ing couch or twitch grass ? 



22. What is the best mode of destroying the white 

 weed or ox-eye daisy ? 



23. Will you give any other details not suggested by 

 the above, which, in your opinion, may be considered 

 important, in regard to this crop ; and particularly, if 

 you have experimented with any varieties of grass not in 

 general cultivation, such as lucerne or alfalfa, rye grass, 

 brome grass, Kentucky blue grass, <fec., will you state 

 the results as fully as possible ? If you have any varie- 

 ties of grass found to be valuable, but not in general 

 cultivation, the names of which are not known to you, 

 will you send them to this office, where the names will 

 be given? 



Very respectfully, your obedient servant, 



CHARLES L. FLINT, 

 Secretary of the Board of Agriculture. 



I was indebted to the kindness of many enterprising 

 and intelligent farmers for full and valuable answers 

 21* 



