3. For the best dissertation on vegetation and the principles of agriculture. II. Honorary premiums, being silver medals with proper devices and inscriptions:-- 4. For the best printed and most correct book of at least 10 sheets. 5. For the best printed cotton or linen cloth, not under 28 yards. 6. For the best imitation of English blankets, not under six. 7. For the next best ditto, not under six. 8. For the best hogshead of strong ale. 9. For the best hogshead of porter. III. Lucrative premiums:-- 10. For the most useful invention in arts, L21. 11. For the best carpet as to work, pattern, and colours, of at least 48 yards,.L5:5s. 12. For the next best ditto, also 48 yards, L4:4s. 13. For the best drawings of fruits, flowers, and foliages by boys or girls under sixteen years of age, L5:5s. 14. For the second best, L3:3s. 15. For the third best, L2:2s. 16. For the best imitation of Dresden work in a pair of man's ruffles, L5:5s. 17. For the best bone lace, not under 20 yards, L5:5s. 18. For the greatest quantity of white linen rags, L1:10s. 19. For the second ditto, L1:5s. 20. For the third ditto, L1. 21. For the fourth ditto, 15s. 22. For the fifth ditto, 10s. The articles were asked to be delivered to Mr. Walter Goodall (David Hume's assistant in the work of librarian), at the Advocates' Library, before the first Monday of December.[87] On the 19th of August the following additional prizes were offered:-- 23. To the farmer who plants the greatest number (not under 1000) of timber trees, oak, beech, ash, or elm, in hedgerows before December 1756, L10. 24. Second ditto (not under 500), L5. 25. To the farmer who shall raise the greatest number (not under 2000) of young thorn plants before December 1758, L6. 26. Second ditto (not under 1000), L4. In the following year the society increased the number of its prizes to 92; in 1757 to 120, in 1758 to 138, and in 1759 to 142; and they were devoted to the encouragement of every variety of likely industry--kid gloves, straw hats, felt hats, soap, cheese, cradles to be made of willow grown in Scotland. One premium was offered to the person who would "cure the greatest number of smoky chimneys to the satisfaction of the society."