34 PHILOSOPHICAL TRANSACTIONS. [aKNO 1665. 



, 11, With what instruments they harrow, clod and rowl, and at what seasons? 



12. How much an acre of good corn generally yields in very good, in less 

 good, and in the worst years ? 



13. What are the causes and remedies of mildew, blasting, and smut; being 

 some of the common diseases of corn in this country ? 



14. How weeds, worms, flies, birds, mice, moles, &c. are prevented. 



15. Upon what occasions young corn is cut or fed in the blade; and what are 

 the benefits thereof ? 



1 6. What are the seasons and ways of reaping and ordering each sort of grain, 

 before it be carried off the ground ? 



17. What are the several ways of preserving grain in the straw, within and 

 without doors, from all annoyance, as mice, heating, rain, &c. 



18. What are the several ways of separating the different sorts of grain from 

 the straw, and of dressing them ? 



19. What are the ways of preserving any stores of grain from the annoyances 

 they are liable to ? 



2. For Meadoius, 



1 . How the above-mentioned sorts of soil are prepared, when they are used 

 for pasture or meadow ? 



2. How are prevented the common annoyances of these pasture or meadow 

 grounds, as weeds, moss, sourgrass, heath, fern, bushes, briars, brambles, 

 broom, rushes, sedges, gorse or furzes ? 



3. What are the best ways of draining marshes, bogs, fens, &c. ? 



4. What are the several kinds of grass, and which are accounted the best ? 



5. What are the chief circumstances observable in the cutting of grass ; and 

 what in the making and preserving of hay ? 



6. What kind of grass is fittest to be preserved for winter feeding ? And what 

 grass is best for sheep, for cows, oxen, horses, goats, &c. 



Account of the Burning Concave Glass, made at Lyons hy M. Villette, 

 and compared ?vith several others made formerly. iV" 6', p. 9o. 

 Thf; following is the account of this glass, communicated in some letters from 

 Paris. 



Concerning the efficacy of M. de Villette's burning glass, all that P. Bertot has 

 written of it, is true. We have seen its effects frequently repeated in the morn- 

 ing, noon, and afternoon, always performing very powerfully; burning or melt- 

 ing any matters, very few excepted. Its figure is round, being rather above 

 thirty inches in diameter. On one side it has a circular frame of steel, that it 

 may keep its just measure. It is easy to remove it from place to place, though it 



