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COLLECTOR'S MANUAL 



of little value to the geologist. Prospecting for fossils is not 

 unlike a search for minerals or metals. If working along a stream 

 or hillside, the collector should locate loose specimens or search 

 for any indication of fossils in rock debris. Such indications should 

 be traced to their source bed. When the fossil-bearins: stratum is 



Fig. 55. — Fossil corals. 



discovered., the collector can decide on the best means of attack 

 depending on such conditions as the hardness of rock, the ease 

 with which it can be split, accessibility, and amount of over- 

 burden (see under fossil plants, p. 107). The important item in 

 every case is to determine the exact layer from which the collection 

 is to be made, and to locate this layer with reference to harder or 



