26 



DEFINITIONS. 



second class, contain univalves not cJiamhered, with stiped andr 

 mostly culmiferous monocotyledonous vegetables, 



ve?tebi-als"^ Class IV. Upper Secondary Class, or Fourth Series, 

 includes those strata which, in addition to the relics of the 

 third class, contain oviparous vertebral animals. 

 Viviparous Glass V, Tertiary Class, or Fifth Series, includes those 



vcrtebrals. ^^^^^^ which, in addition to the relics of the fourth class, con- 

 tain viviparous vertebral animals. Mostly not indurated. 



ANOMALOUS DEPOSITES, 

 Anomalous. those which are produced at the earth's surface by the 



fusion or disintegration of regular strata. 

 Later ex- 1. VoLCANiG DEPOSITES. Hornblende basaltic rocks, de- 

 plosions. pQgjtgjj since the primitive explosion and before the deluge ; 



or more recent deposites of lava, breccia, ashes, stones, &c. 

 produced by the direct action of volcanic heat upon the sub- 

 stance of the deposites. 



Noah's DiLuviON. Subdivisions. Proper diluvion is a con- 



deluge. 



fused mixture of gravel, sand, clay, loam, plants, animals, &c. 

 so situated that it must have been deposited from water in a 

 state of violent action, which could not have been produced by 

 any existing cause : or it must agree in character with depos- 

 ^f^"^^'^^^ ites which are thus situated. Never contains works of art. 

 Ultimate diluvion, a thin deposite of greyish yellow loam, 

 reposing on other strata, in all ancient uncultivated forests, 

 which have not been cut away since the deluge. It is so 

 situated, that it cannot have been deposited from water while 

 running with much velocity ; but appears to be the last set- 

 tlings of a deluge. 



Present ^^^'^ DILUVION.* Any detritus deposited by water 



deposites. gince the deluge ; which is distinguished by the coarser peb- 

 bles being nearest to, and the finer sediment remotest from, the 



* Very absurdly called alluvion ; as this is a generic term of long standing. 



