2OOL0GY. 



[Sect. XL 



clay or stone ; in patches, or continuouBly, on the sides of 

 hills, or of clifts. and at what altitudes above the sea. 



Stat<^ whether the fossils found in any given situation 



are all marine, terrestrialj or fluviatile : mixed, or in dis- 



tinct groims ; and, if mixed, in what proportions. 



Oh 



fresh 



water and marine shells in bodies of water near the shore, 

 or in lakes at a distance from it. 



Inquire whether bones of mammalia occur among them. 



Note the brackishness of the water ; — whether it com- 

 municates or not with the sea. State any differences of 

 the animals from those of ])urely fresh, and of bait water. 



Observe carefully the position of fossils in the beds 



afford them. If corals, whether vertical or in- 



which 



clined ? If shells, are they disposed in layers parallel to 



the strata ? 



Notice whether testacea are carried up to cliffs by 

 birds ; the quantity of shells thus accumulated, and their 

 state of preservation. 



Notice the relative numbers of shells of the same species 



on the shores. 



Seek for and preserve all traces o{ fossil bones. 



Be careful to ascertain that thev are imbedded in the 



nxMmii. riof, IdnRP: or intermixed with the recent detritus. 



If any bones should be dredged up, note the place of 

 tiieir occurrence^ latitude and longitude, its distance from 

 any great rivers, whether within currents. 



Bones in caves. — Examine the materials forming the 



bottom of caves for bones. 



Bon: hreccia.' — Search for this in crevices. 



Observe all indications of coal, and collect specimens ; 



