



ROCKS. 15 





Vames. 



Localities. 



26 Pot, 



IDAJI 



sandstone. Chazy, Clinton. 



27 



do 



Keeseville, Essex. 



28 



do 



(with linguke). French creek, St.Lawrence. 



29 



do 



(with Lingula antiqua). 



30 



do 



(with linguloe : spotted with manganese). 



31 & 32 



do 



Near Lewisburgh furnace, Lewis. 



33 



do 



Port Kent, Essex. 



34 



do 



(containing concretions). 



35 



do 



(concretion). 



36 



do 



Potsdam. 



37 



do 



Saranac. 



38 



do 



(colored with vegetable matter). Keeseville, Essex. 



39&40 



do 



(containing concretionary carbonate of lime). 



41 



do 



(red). 



42 



do 



(brecciated). 



43 



do 



(fucoidal). 



44 



do 



(brecciated). Chazy, Clinton. 



45 



do 



(weathered surface). French creek, Jefferson. 



46 & 47 



do 



(metamorphic). 



THIRD WAIL CASE. 



48 Potsdam sandstone (lowest layer brecciated). Dekalb, St.Lawrence. 

 (massive). Potsdam, St.Lawrence. 

 (rippleinarks). Keeseville, Essex, 

 (with casts of mud furrows). 



Washington county, 

 (lowest layer conglomeritic). Lewisburgh, Lewis. 



Lewisburgh, Lewis. 



Dekalb, St.Lawrence; 



Washington county. 



Chazy, Clinton. 



Keeseville, Essex. 



Calway, Saratoga, 

 (with fragments of impure limestone). Chazy. 

 (columnar from artificial heat). Keeseville, Essex. 



49 



do 



50 



do 



51 



do 



52 



do 



53 



do 



54-56 



do 



57 



do 



58 



do 



59 



do 



60 



do 



61 &62 



do 



63 



do 



64 



do 



