216 



CONVERSATION THE SEVENTEENTH. 



THE FOUR CLASSES OMITTED BY WITHERING. 



CLASS 20. GYNAN'DRIA. NATURAL ORDER OR- 

 CHID'E^E. CLASS 21. MONOE'CIA. BREAD-FRUIT- 

 TREE. MAIZE COCOA-NUT. INDIAN-RUBBER. 



WATER-PROOF CLOTH. TALLOW-TREE. CASTOR- 

 OIL PLANT. MANCHINEEL-TREE. OTHER VALU- 

 ABLE TREES. CLASS 22. DIOE'ciA. WILLOWS. 



DATE-PALM. PISTA'CHIA. M As'TICK. HEMP. 



NUTMEG. CLASS 23. POLYGA'MIA. -PLANTAIN. 



SENSITIVE PLANT GUM-ARABIC FIG. 



MOTHER. 



You will be sorry to hear, Edward, that we have 

 no plant to examine to-day. 



EDWARD. 



But there are twenty-four classes ; and we have 

 gone through only nineteen. 



MOTHER. 



Very true; but, in Dr. Withering's arrange- 

 ment of British plants, those of the twentieth, 

 twenty-first, twenty-second, and twenty-third 



