16 



AMK/acAX MrSK(M ClIDK LEAFLETS 



of shells loiin :i coNciiii'i wliicli tends to |)r('S('rv(' hone iini)l(Mn('nts, 

 cliancd corn, and such pciisliahic atliclcs lioni d('ca\' in a \\a\- that tlic 

 looser slicUs ol" the «!;eneral la\-ers fail to do. 



Slicll-lieaps. while ahundant alon«r the seacoast , are seldom found 

 inland, excej)! on salt ciceks or other streams havinj^ access to salt water. 

 They may he seen all alon^ the east shore of the Hudson River at more 

 or less fre(iuent inteivals as far uj) as Peekskill: on ("loton Point and 

 between N\ack and Hook Mountain on the west shore they attain con- 

 siderable size. There are a few small deposits, however, composed 



MAP GIVING THE LOCATIONS OF SHELL DEPOSITS 

 Those marked + have l)een exi)k)recl l)y the Museum 



mainly of fresh water clams {Unio) situated on fresh water lakes in the 

 interior of Westchester County. There are many shell-heaps on Staten 

 Island. Shell-heaps occur or did occur on Constable Hook, New Jersey, 

 and at intervals between there and Jerse}^ City along the western shore 

 of New York Bay. The accompanying map gives the location of the 

 important known shell deposits in the vicinity of New York City. 



