14 



1. Make longitudinal and transverse sections of the flowers of an 

 apple. Observe the position and extent of the receptacle and the calyx- 

 tube. Such observation should be made every two days. 



2. Determine from your studies the formation of the apple, — the 

 part occupied by the calyx, receptacle, and ovary-wall respectively. 



3. Cut sections both longitudinal and transverse of the ovary of the 

 cherry from the time the flower fades up to the time the fruit is quite 

 large. Note especially the growth in thickness of the parts of pericarp, 

 viz., the endocarp or "stone," and the mesocarp or "flesh." 



XX. The Rose Family. 



1. Collect, dry, and mount as many specimens of the Rose family 

 3.S you can find. 



2. Examine carefully the flowers of each, and make longitudinal, 

 vertical sections of each. 



3. Make careful drawings of the vertical sections, — the object being 

 to determine the cohesion and adhesion of the parts of the flower. 



4. Group all the forms studied into three: the apple group; the 

 strawberry group; and the plum group. 



5. Try to determine the relationships of the forms studied. 



6. Compare a raspberry with that of a strawberry. Watch their 

 g^rowth after the flower fades. 



7. Watch the development of the ovary of a plum when the flower 

 begins to fade. What becomes of the receptacle? 



The following forms at least should be studied : apple, plum, straw- 

 berry, spiraea, cherry, june-berry, raspberry, wild rose, hawthorn, pear, 

 cinquefoll, barren strawberry, blackberry, mountain ash. 



XXI. The Legumes. 



Some Special Studies (Spalding) : 



(a) Arrangements for cross-fertilization. 



(b) Extent to which the production of seeds of Red Clover is de- 

 pendent on the agency of insects. 



(c) Capacity of the Common Pea for self-fertilization. 



(d) Occurrence of modified leaves, such as tendrils. 



(e) Morphology of protective structures of various leguminous plants, 

 e.g,. spines of locust and honey locust, hairs of desmodium, etc. 



(/) Sleep movements of Clover, etc. 



(g) Causes of the wide distribution of the family. 



1. Classify the legumes of the farm according to their leaves, noting 

 whether the leaves are (1) Pinnate, ending in tendrils; or (2) Pinnate 

 with two or more pairs of opposite and one single terminal leaflet; or 



