X CONTENTS 



CHAPTER XII 



PAGE 



Leguminosae — Continued. Pi sum (Pea) . . . . . . -339 



CHAPTER XIII 



LiNACEAE. LiNUM (FlAx) 37I 



CHAPTER XIV 

 Malvaceae. Gossypium (Cotton) 411 



CHAPTER XV 

 Umbelliferae. Apium (Celery) . . . . . . . -451 



CHAPTER XVI 



CONVOLVULACEAE. IpOMOEA (SwEET PoTATo) ...... 485 



CHAPTER XVII 

 Solan ACEAE. Solanum (White Potato) 514 



CHAPTER XVIII 

 Solanaceae — Continued. Lycopersicum (Tomato) . . . . -55° 



CHAPTER XIX 

 Cucurbit ACEAE. Cucurbita (Squash) . . . . . . . .580 



CHAPTER XX 

 CoMPOsiTAE. Lactuca (Lettuce) 6ll 



Glossary 653 



Index . • • 665 



