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to the north of a line stretching from Perth Amboy to Trenton is 

 predominately of deciduous trees, mostly of northern extraction 

 and affinities. South of the line from Long Branch to Salem 

 (roughly the pine-barren country) the forest is predominately 

 coniferous. The region between these he has called the tension 

 zone, from the fact that the trees of each opposing zone are in 

 this middle zone apparently striving for predominance. Some 

 of the field meetings this summer will be held with a view to 

 ascertaining how far Dr. Rollick's observations obtain among the 

 rest of the vegetation in this region. An effort will be made to 

 extend the range of some of the typically southern or coniferous 

 plants northward, and to trace the migratory tendencies of the 

 northern plants southward. Observations will be made also on 

 plants with apparently no very definite habitat preference. 



The meeting of Saturday, August 13, will be in the museum 

 building of the New York Botanical Garden and will consist of 

 a lecture at 4:00 p. M. by Mr. Norman Taylor on "Influences 

 which Govern Local Distribution of Plants." This will deal 

 with the above and similar ecologic problems. 



August 20. Monmouth Junction, N. J. Train leaves Hudson 

 Terminal Station (Penna. R. R.) at 9 135 A. m. Cost of trip about 

 $2.00. This is at the edge of the deciduous zone and the ad- 

 joining tension zone. 



August 27. Runyan, N. J. Train leaves Hudson Terminal 

 Station (Penna.) at 9:05 a. m. Returning train leaves at 5:57 

 p. M. Cost of trip about $1.50. This is directly in the middle 

 of the tension zone. 



September 3. Freehold, N. J. A seven-mile walk is planned 

 which will extend from Freehold to Farmingdale crossing from 

 the tension to the coniferous zone during the walk. Train leaves 

 Liberty Street (Central R. R. N. J.) at 8:30 a. m. Return train 

 from Farmingdale leaves at 3:56 p. m. Cost of trip about $2.75. 



September 10. Windsor, N. J. Train leaves Hudson Termi- 

 nal Station (Penna. R. R.) at 9 :05 A. m. Returning train at 5 :03. 

 Cost of the trip about $2.00. This is in the middle of the tension 

 zone, but further down than Runyan. 



The chairman of the field committee will act as guide on all 



