PARTICULAR TYPHS OF FLOWERS, CONTINUED 221 



mental points of comparison ; and 

 by means of these points we are 

 able to con- 

 struct classifi- 

 cations. Some 

 of the points 

 of most impor- 

 tance in com- 

 parative stud- 

 ies of flowers 

 are : the numer- 

 ical plan ; the 

 relation of the 

 parts with reference to 

 the ovary; the coales- 

 cence of parts or series ; 

 the reinforcement of 

 the flower. 



Suggestions. — With the sug- 

 gestion of the last paragraph 

 in mind, the pupil should com- 

 pare the various flowers which 

 he commonly meets. If a, 

 dozen or more flowers of dif- 

 ferent kinds can be had at 

 once, it is excellent practice 

 to construct a method of ar- 

 ranging or classifying them 

 into groups or series. If the 

 teacher were to consult a 

 gardener sometime in advance, 



Fig. 213. 

 Wild lady's-slipper. 



