17. No one, who exercises self-control, fails to keep his temper;
Some judges lose their tempers.
pg102
18. All pigs are fat;
Nothing that is fed on barley-water is fat.

19. All rabbits, that are not greedy, are black;
No old rabbits are free from greediness.

20. Some pictures are not first attempts;
No first attempts are really good.

21. I never neglect important business;
Your business is unimportant.

22. Some lessons are difficult;
What is difficult needs attention.

23. All clever people are popular;
All obliging people are popular.

24. Thoughtless people do mischief;
No thoughtful person forgets a promise.

25. Pigs cannot fly;
Pigs are greedy.

26. All soldiers march well;
Some babies are not soldiers.

27. No bride-cakes are wholesome;
What is unwholesome should be avoided.

28. John is industrious;
No industrious people are unhappy.

29. No philosophers are conceited;
Some conceited persons are not gamblers.

30. Some excise laws are unjust;
All the laws passed last week relate to excise.

31. No military men write poetry;
None of my lodgers are civilians.

32. No medicine is nice;
Senna is a medicine.

33. Some circulars are not read with pleasure;
No begging-letters are read with pleasure.

34. All Britons are brave;
No sailors are cowards.

35. Nothing intelligible ever puzzles _me_;
Logic puzzles me.

36. Some pigs are wild;
All pigs are fat.
pg103
37. All wasps are unfriendly;
All unfriendly creatures are unwelcome.

38. No old rabbits are greedy;
All black rabbits are greedy.

39. Some eggs are hard-boiled;
No eggs are uncrackable.

40. No antelope is ungraceful;
Graceful creatures delight the eye.

41. All well-fed canaries sing loud;
No canary is melancholy if it sings loud.

42. Some poetry is original;
No original work is producible at will.

43. No country, that has been explored, is infested by dragons;
Unexplored countries are fascinating.

44. No coals are white;
No niggers are white.

45. No bridges are made of sugar;
Some bridges are picturesque.

46. No children are patient;
No impatient person can sit still.

47. No quadrupeds