24 REPRESENTATIVE PLANTS 



Applications. Obtain a specimen if joossible of each of the 

 following. The drug store keeps them. 



a. Ginger d. Geranium 



b. Turmeric e. Calamus 



c. Orris /. Sarsaparilla 



Take three vials for each specimen. Take equal quanti- 

 ties of each, crush in a clean mortar, one at a time, and 

 place in vial, labeling, ginger, 1, 2, and 3, and so on, for the 

 others. Fill vials. No. 1 with hot water ; No. 2 with water 

 and glycerine, equal quantities of each ; No. 3 with 60 % 

 alcohol. Set all the vials away for one week, and then 

 compare 1, 2, and 3 of each series, by color, odor, taste, and 

 residue. Your experiment illustrates, roughly, how medi- 

 cines and flavors may be made. Many other solvents besides 

 the ones given are used. 



B^dbs. (Bud Type of Stem) 



Form and structure. Examine bulbs of onions, narcissus, 

 tulips, gladioli, and other forms convenient to obtain. For 

 purposes of this study, the bulb should be cut into two 

 sections, lengthwise through the middle. A bulb is in its 

 general plan of structure very similar to a bud, and it is 

 well to revert to the bud structure at this time and observe 

 the points of resemblance. The dense portion of the bulb, 

 from the lower end of which the roots grow, the upper 

 end being continued into an apical bud, is the ste^n proper. 

 Observe further that all the fleshy scales {modified leaves) 

 are attached to this stem. A stem may be defined as ordi- 

 narily and primarily a structure, the purpose of which is in 

 large part to bear leaves. Keep this in mind. 



Drawings. Make drawings of all the bulbs, external and 

 sectional views, you are able to obtain, carefully naming all 

 parts. 



Other work. What advantage to the plant is the bulb 



^panr library 



