180 GEOLOGICAL SURVEY OF NEW JERSEY. 



METHOD OF INVESTIGATION PURSUED. 



The general facts as previously indicated having been recog- 

 nized, steps were taken towards a detailed investigation by 

 traversing the state in a series of routes more or less at right 

 angles to the trend of the geologic formations, thus crossing the 

 outcrops in succession and noting whatever changes in vegeta- 

 tion were apparent from place to place. Several critical locali- 

 ties were also made the subjects of special investigation. Fol- 

 lowing are the routes traveled and special localities visited : 



1. Jersey City to Deckertown. Triassic, Archaean, Ordovician,' 

 and Silurian formations, including the region covered more or 

 less with glacial drift. 



2. Jersey City to Easton, Pa. Same formations as in No. i, 

 but south of the Terminal Moraine. 



3. Jersey City to Stroudsburg, Pa. Same formations as in 

 No. i, with Devonian additional. 



4. Jersey City to Allamuchy, via Sparta and Waterloo. Same 

 formations as in No. i, but further south. 



5. Monmouth Junction, beginning at Ten-Mile Run, via 

 Jamesburg and Freehold to Farmingdale. Triassic, Cretaceous 

 and Tertiary formations. 



6. Lakewood to South Amboy, via Farmingdale, Eatontown, 

 Red Bank and Matawan. Tertiary and Cretaceous formations. 



7. Point Pleasant to Burlington, via Lakewood, New Egypt 

 and Mount Holly. Tertiary and Cretaceous formations ; com- 

 plete section through the state. 



8. Bound Brook to Perth Amboy, via New Brunswick. Tri- 

 assic and Cretaceous formations. 



9. Metuchen to Perth Amboy. Triassic and Cretaceous for- 

 mations, Terminal Moraine and extra-morainic drift. 



10. Camden to Cape May. Cretaceous, Tertiary and Post- 

 Tertiary formations. A special object in visiting the latter 

 locality was to investigate the report that Firms Tczda L,. (old- 

 field Pine) had been found there. The result was that its occur- 

 rence there was verified and a new species was added to the 

 flora of the state. A full account of this discovery was pub- 

 lished in The Plant World, Vol. I, No. 2 (Nov., 1897), which 



