ANIMAL STUDIES Continued 



Exercise No. Page 



31. Scoring a Dairy Cow 59 



32. Babcock Test 61 



33. Physical Properties of Milk . 63 



34. Comparative Cost of Different Cuts of Beef 64 



35. Scoring Beef Cattle 68 



36. Cuts of Pork 69 



37. Cuts of Mutton 72 



38. Poultry House 75 



39. Types and Breeds of Chickens 76 



40. A General Purpose Fowl 77 



. 41. Poultry Score Card 79 



42. Formation of an Egg 80 



43. Parts of an Egg 80 



44. The Effect of Feed on the Color of Eggs . . . 81 



45. Candling Eggs . 82 



46. Effect of Temperature on Eggs 83 



47. Scoring Eggs 84 



48. Caring for and Marketing Eggs 85 



49. Picture Book 86 



SOIL AND PLANT GROWTH 



50. Composition of Soil 87 



51. Testing Soils 87 



52. Size of Soil Particles . . . : 88 



53. Percolation of Water 90 



54. Water Entering Tile Drain 91 



55. Sun's Heat on Dry and Wet Soils 92 



56. Rise of Water in Soil 93 



57. Rate of Percolation 94 



58. Plowing-Under Organic Matter 95 



59. Freezing and Thawing 96 



60. Soil Drainage 97 



61. Oxygen and Germination 98 



62. Effect of Light upon Germination and Plant Growth 98 



63. Amount of Air Needed by Roots 99 



64. Moisture Required for Germination 100 



65. Effect of Temperature on Germination 100 



66. Depth for Planting Seeds 101 



67. Root Growth 102 



68. Amount of Water Used for Plant Growth 103 



10 



