X 
CONTENTS 
and leaf. Gross structure and histology of the sori and sporan 
gia. Rupture of sporangium and spore dissemination. HIS 
TORY OF THE GAMETOPHYTE OR SEXUAL GENERA 
TION. — Origin of new sporophyte or diploid plant from fer 
tilized egg. Growth of seedling into mature sporophyte 
Alternation of generations 
CHAPTER III 
Life History of a Gymnosperm (Pinus Strobus) 
DESCRIPTION OF THE WHITE PINE TREE (SPOROPHYTE).— 
Staminate cones. Carpellate cones. DESCRIPTION OF 
THE GAMETOPHYTE GENERATION.— The Male Game- 
tophyte. The Female Gametophyte. Fertilization. Seed 
Formation and Distribution. GERMINATION OF THE 
SEED 24-31 
CHAPTER IV 
Life History of an Angiosperm 
DESCRIPTION OF THE DOG’S TOOTH VIOLET.— Development 
of Female Gametophyte. Pollination and Fertilization. 
Maturation of the Pollen Grain and formation of the Male 
Gametophyte. Ripening of the Ovule to form the Seed and 
of the Ovary to form the Fruit. Germination of the Seed and 
development of the Mature Sporophyte 32-36 
RESEMBLANCES BETWEEN GYMNOSPERMS AND ANGIO- 
SPERMS 36 
FUNDAMENTAL DIFFERENCES BETWEEN GYMNOSPERMS 
AND ANGIOSPERMS 36-37 
CHAPTER V 
Vegetable Cytology 
VEGETABLE CYTOLOGY.— Definition. The Plant Cell as the 
Fundamental Unit. A typical plant Cell 38-39 
PROTOPLASM AND ITS PROPERTIES.— Structure. Metabolism. 
Reproduction 39 ~ 4 ° 
PROTOPLASMIC CELL CONTENTS. — Cytoplasm; nucleus; nucleolus; 
plastids (leucoplastids. chloroplastids, chromoplastids) . . . 40-41 
Pages 
13-23 
