EXERCISES 



IN 



STRUCTURAL AND PHYSIOLOGICAL BOTANY. 



SEEDS AND THEIR GERMINATION. 



Material Required. The pupil must have at least all 

 the seeds and implements here named: 



Seeds (20 or more of each kind). (i) Some large vari- 

 ety of common beans; (2) Windsor beans; (3) scarlet run- 

 ner; (4) sunflower; (5) squash or pumpkin; (6) castor-bean; 

 (7) pine-nuts; (8) buckwheat; (9) morning-glory; (10) coffee; 

 (n) corn; (12) wheat. 



Implements. (i) A knife, which must be sharp and 

 kept so by the use of a good whetstone;* (2) a cup or drink- 

 ing glass (these may stand safely on a shelf or on window- 

 sills between tKe botanical working hours); (3) a glass fruit 

 jar holding one quart; (4) a pocket lens, if the school is not 

 provided with dissecting microscopes; (5) a note-book. 



EXERCISE i. 



Take one of the common beans. Find three marks on 

 the edge. What do you think caused the largest mark ? 



*The teacher should have a whetstone of the kind called oilstoue, on which 

 water instead of oil should be used. Such a stone costs only ten or fifteen cents. 

 Some important experiments require red ink, India-ink (the form known as 

 waterproof drawing ink is best), and iodine. These should be in the teacher's 

 charge. If the school can afford dissecting microscopes (one for each member of 

 the class; or, better than none, half as many) they should be kept in a tight cup- 

 board when not in use, along with needles, tweezers, dissecting knives (shoe 

 knives answer the purpose), and other implements. All these things can be 

 obtained of the publishers. [See Appendix.] 



