lXVlii PRELIMINARY SKETCH OF THE 



Order I. — Intestina. Animals, simple, desti- 

 tute of limbs, naked. 



Order II. — Mollusca. Animals, simple, 

 naked, not included in a shell furnished with 

 limbs. 



Order III. — Testacea. Animals with the 

 same characters of the last, but included in a 

 shell. 



Order IV. — Zoophyta. Composite animals, 

 resembling a flower, and springing from a vege- 

 tation and stem. 



Order V.— Infusoria. Very small simple 

 animals. 



We have only to add a word or two respect- 

 ing Linneeus's method of treating the species : 

 throughout his system, the classical, ordinal, and 

 generic characters always make, or are under- 

 stood to make, a part in the description of each 

 species. After these, Linnaeus begins with 

 his own specific name for the animal, esta- 

 blished upon the most essential difference ob- 

 servable between that and every other spe- 

 cies of the genus. If the specific name be 

 the same adopted in any of his former wri- 

 tings, he refers to it. He has, however, in 

 many parts of his enlarged edition of the 

 Systema, formed new names to animals noticed 



