Vm CONTENTS. 



A CHAPTEK ON CLASSIFICATION. 



CIAaSiriCAIION OB ABKAirCtBMEjrT or PLANTS TO BE 

 LEABNED FBOM COUMOTSSBT WEEDS. 



The Natural Classifioation — Plants evidently in Groups — Eetro- 

 spect — Di-dsion into Flowering and Flowerlesa Plants — ^Flower- 

 less Plants — General Characteristics — Flowering Plants — 

 Division into Plants with Straight-veined Leaves and with 

 Netted-veined Leaves — General Distinctions — Plants with 

 Netted- veins— Divided into three principal Sections — Sub- 

 division of Sections into Natural Families — Sub-division of 

 Families into Genera — Genera composed of Speciss or of indi- 

 vidual Plants — Advantages of a Natural Classification — ^Arti- 

 ficial Classification — Concluding Kemarks . . 206 — 212 



