SYNOPSIS. 



27 



source of water whicli made the deposites. May contain Coniaia 



works of art 



works of art. 



IV. Analluvion. Any detritus which has not been Present 

 washed from the place of its first disintegration ; it being the soH^^'^^^ 

 pulverized surface of the underlaying rock. 



GEOLOGICAL SYNOPSIS ; 



Exhibiting each stratum hy a wood cut figure. 



All general strata, are arranged under their respective clas- 

 ses, or series ; proceeding from the bottom of each page to 

 the top. 



Five classes of regular strata are adopted ; for the second- 

 ary class is, with great propriety, divided into upper and lower ^ 

 by late European geologists. This accords with the distribu- 

 tion of strata into series of ternary formations. 



The numbers and abbreviations in the left column, indicate 

 the numbers of the series and classes, to which each forma- 

 tion belongs. Carb. is an abbreviation of carboniferous for- 

 mation — Q,u. the quartzose formation — Calc. the calcareous 

 formation. 



The wood cut figures in the second column represent the 

 strata of each series or class. 



The small capitals in the third column against the top of 

 each figure, express the name of the general stratum. The 

 italics under it express the names of the subdivisions. 



The fourth column contains the names of the most impor- 

 tant varieties and most extensive beds embraced in the strata. 



Anomalous deposites are not classified ; because the agree- 

 ment in character, among them, will not authorize any syste- 

 matic arrangement. 



