290 QUESTIONS. 



with the reasons. Give an English course for clayey soils. For rich 

 loams. What fact should essentially vary these courses when adopted 

 in America ? 721. What may sometimes be substituted for a rotation 

 of crops ? 



CHAPTER XXII. 724. What is the first of the harvest? What 

 determines the proper time for cutting grass ? 725. When should it be 

 cut for feeding to milch cows ? 726. When to obtain the greatest 

 quantity and the best quality of milk ? 727. When to feed to store 

 cattle ? 728. When do grasses attain their full development ? What 

 constituents of grass are of the highest value ? 729. What change 

 takes place after flowering ? 730. Why not let the seed ripen ? 731. 

 How is grass cut? What is the advantage of the mowing machine- r 

 732. What further advantage is there ? How is grass treated after 

 being cut ? What is the hay tedder ? 734. How is it gathered ? What 

 is the advantage of the hors.e-rake ? 735. On what does the time 

 required to cure grass depend ? When may it be got in ? 736. What 

 is the effect of over-drying ? 737. In what does the true art of hay 

 making consist ? 738. How may injury in the mow be prevented? 

 739. What is the result of experience in drying hay ? 740. When 

 should clover be cut and how cured ? When may it be put in ? 741. 

 How does clover compare with other hay ? For what is it most 

 valuable ? 742. How may it be saved from injury ? 743. When 

 should lucerne be cut and why ? 744. When is the proper time to cut 

 wheat and rye ? When then ? How are they cut ? 745. How are oats 

 and barley cut ? 746. When should Indian corn be gathered ? What 

 is the custom ? 747. When should potatoes be dug and how ? What 

 is the result of exposure to the sun ? 748. What is the effect of expo 

 sure to the sun on the surface while growing ? 749. When are turnips 

 harvested and how ? 750. When should carrots be taken out of the 

 ground and how ? 751. .What is said of mangolds ? 



CHAPTER XXIII. 752. What is disease ? How is it brought about ? 

 753. What is a predisposing cause of disease? 754. What is an 

 exciting cause ? 755. What are some of the diseases often ascribed to 

 parasites ? 756. What is mildew ? 757. What is the appearance of 

 wheat mildew ? What plants does the white mildew attack ? 758. 

 How does white mildew first appear? How does it extend? 759. 

 What is the remedy ? 760. Is wheat mildew the same as that of the 

 vine? 761. What varieties of wheat are most affected with it? 762. 

 What gives it the name of rust ? 763. On what soils is wheat most 

 liable to be attacked t 764. What is the remedy ? 765. When may 



