Xii ANALYSIS OF THE LESSONS. 



493. Cryptogamous or Flowerless Plants. 494. What they comprise -, why 

 so called. 495. To be studied in other works. 



LESSON XXVIII. SPECIES AND KINDS p. 173. 



496. Plants viewed as to their relationships. 497. Two characteristics of 

 plants and animals : they form themselves, and, 498. They exist as Individu- 

 als. The chain of individuals gives rise to the idea of, 499, 500. Species : as- 

 semblages of individuals, so like that they are inferred to have a common an- 

 cestry. 501. Varieties and Races. 502. Tendency of the progeny to inherit 

 all the peculiarities of the parent ; how taken advantage of in developing and 

 fixing races. 503. Diversity and gradation of species ; these so connected as to 

 show all to be formed on one plan, all works of one hand, or realix.ations of the 

 conceptions of one mind. 504. Kinds, what they depend upon. 505. Genera. 

 506. Orders or Families. 507. Suborders and Tribes. 508 Classes. 509. The 

 two great Series or grades of plants. 510. The way the various divisions in 

 classification are ranked. 



LESSON XXIX. BOTANICAL NAMES AND CHARACTERS. ... p. 178. 



511, 512. Classification ; the two purposes it subserves. 513. Names : plan of 

 nomenclature. 514, 515. Generic names, how formed. 516. Specific names, 

 how formed. 517. Names of Varieties. 518, 519. Names of Orders, Sub- 

 orders, Tribes, &c. 520,521. Characters. 



LESSONS XXX. -XXXII. How TO STUDY PLANTS, pp. 181, 187, 191. 



522 - 567. Illustrated by several examples, showing the mode of analyzing and 

 ascertaining the name of an unknown plant, and its place in the system, &c. 



LESSON XXXIII. BOTANICAL SYSTEMS p 195 



568-571. Natural System. 572, 573. Artificial Classification. 574. Arti- 

 ficial System of Linnseus. 575. Its twenty-four Classes, enumerated and de- 

 fined. 576. Derivation of their names. 577, 578. Its Orders. 



LESSON XXXIV. How TO COLLECT SPECIMENS AND MAKE 



AN HERBARIUM p. 199. 



579 - 582. Directions for collecting specimens. 583, 584. For drying and 

 preserving specimens. 585, 586 For forming an Herbarium. 



GLOSSARY, OR DICTIONARY OF BOTANICAL TERMS p. 203 



