LINN^US. 395 



Order III. Metalla, Metallic Minerals. Distin- 

 guishable by good eyes ! very heavy, fusible, soluble in 

 appropriate acid menstrua ; as molybdfena, lead, gold, 

 and copper. 



Class III. FossiLiA, Fossils. 



Ambiguous stones, originating from modifications of 

 the substances included in the preceding classes. 



Order I. Petrificata, Petrifactions. Impressed 

 with the form of some natural object, as, — 



Zoolithus, the petrifaction of an animal of the class 

 Mammalia. 



Ornitholithus , a petrified bird. 



Amphibiolithus, a petrified frog, snake, &c. 



Ichthyolithus, a petrified fish. 



Entomolithus, a petrified insect or crab. 



Helmintholithus, of the class vermes, including shells. 



Phytolithus, vegetable petrifactions. 



Graptolithus, resembhng figures produced by painting ; 

 as florentine and landscape marble. 



Order II. Concreta, coagulated from particles agglu- 

 tinated at random ; as urinary and salivary calcuh ; tar- 

 tar of wine ; pumice, formed by fire ; stalactite, formed 

 by air ; tophus, produced under water, as oolite. 



Order III. Terr^, Earths. Pulverized, their par- 

 ticles loose ; as ochre, sand, clay, and chalk. 



The first edition of the Systema Naturae, which 

 consisted of fourteen folio pages, was, as has been 

 already related, printed at Leyden in 1735. That 

 which the author reckoned the twelfth, but which 

 was in reality the fifteenth, is the one that ought to 

 be referred to by naturalists, it being the last that 

 was published under his own care and inspection. 

 It appeared at Stockholm in 1 766. 



An edition, greatly enlarged, was published at 

 Leipsic by Gmelin in 1788, and contains numerous 

 species not included in any of the preceding. '' No 



T 



