252 API'EXDIX 



etc., suggest corresponding coiiipouiid forms. This is meant to be an 

 exercise in systematic grouping on lines of possible evolution of leaf 

 forms. Can transitional forms between pinnate and palmate be 

 found ? The material will be selected by the teacher from the flora 

 of the particidar locality. 



Exercise XXVIII. — Onion. Onion ''sets" from the seedsman; 

 inexpensive. — Acacia. This is interesting in connection with the 

 natural conditions under which the phyllodineous Acacias grow. 

 Pressed material may be used, derived, of coui'se, from some green- 

 house, Phyllodia with leaflets may be found on some species, even in 

 the adult condition (e.g. A. melaiiu.ri/hn). See phi/llodes, Ch. X. 



Chapter X. The special uses of the leaf, treated in §§ 146-153, 

 may with great advantage be illustrated by living material. Seeds 

 of Cohcea macrostemma raa.j be bought and the plant raised in the 

 schoolroom, if the temperature is favorable. Drnsera hinata may 

 perhaps be obtained from florists or from a botanic garden. D. 

 rotundifoUa rests in winter. A Wardian case will keep Droseras, 

 Sarracenias, and Dionaeas in good condition for observation. 



Chapter XI. Exercises XXIX-XXXII. — Sci/la siberica is good for 

 these exercises. Order in the fall, for spring use, from florists. Cost 

 small. Tulips can be had from Chiistmas onward. At wdiolesale 

 from commercial growers tliey cost about 2 cents each, though more at 

 times. Hyacinths, not so good, 5-10 cents a spike, November to May. 

 The above are mentioned as availalile for city schools. Scilla is common 

 everywhere in gardens in early spring. Bulbs, .fl per 100. Of wild 

 material for tlie first flower studieil, Dogtooth Violet {Erythroniuiii) 

 and Trillium are also good. The Liliacece, in general, are excellent. 



Exercise XXXIII. — The principles of anthotaxy had best be taken 

 up in the course of the general study of the flower, for the sake of 

 economy of material, rather than as the subject of a separate study. 

 For the benefit of city schools, some information as to kinds, prices, 

 etc., of flowers may be proffered. Azaleas, Christmas to Easter, cheap. 

 Swainsonia (leguminous, racemose), all year, 50 cents dozen spikes. 

 Candytuft (cruciferous, racemose), all year, 25 cents dozen spikes. 

 Xasturtium, all year, 25 cents dozen. Begonia (cymose, unisexual), 

 any time, cheap. Primula, 25 cents pot. Bouvardia (umbellate), 25 

 cents dozen heads, all year. Cras.fula quailrifiila, compound cymose. 

 Oxalis, good, cymose. Eupatoriuin, Stevia, and Cliryxunthemum frute- 

 scens, composite heads. The above are suggested in case winter 

 material must be used. Buy of wholesale dealers, or growers. 



Exercise XXXIV. — The material must be gathered at the flowering 

 season of the tree chosen (Larch, Spruce, Fir, Pine), in spring, and 

 preserved in alcohol, unless used at once. The fresh, fertile cone 

 (here for convenience called a "flower," but also spoken of as an 

 inflorescence) is very beautiful in form and color. 



