Xll 



CONTENTS 



CHAPTER PAGE 



XXI. TAMING AND FEEDING BIRDS . . . . 347 



XXII. ELEMENTARY FORESTRY . . . . 365 



XXIII. ELEMENTARY FORESTRY (Continued} . t .* 379 



XXIV. AQUARIA, THEIR CONSTRUCTION AND MAN- 



AGEMENT . . . ... . \. 393 



XXV. MISCELLANEOUS ANIMALS . . . 405 



XXVI. FLOWERLESS PLANTS. . . . '. .' 435 



XXVII. FLOWERLESS PLANTS (Continued}, MOULDS, 



MILDEWS, YEAST, BACTERIA . . , . 457 



XXVIII. THE GRADE PLAN > . 478 



INDEX 



497 



