1373. 



235 



[Lesley. 



the third 200, the second 300 feet. Then, the index being brought to 21 

 the floating needle pricks 327. See woodcut, Fig. 



Mr. Eckley Coxe has had a useful addition made to his 

 instruments in the shape of a set of removable rings, divided 

 for tooths, lOOOths, 66ths, 33rds, &c, &c. Two little screws 

 hold the ring in place, whichever one may be in request for 

 any particular plotting. When plotting on the scale of some 

 other unit of distance is required another ring is substituted. 



Stated Meeting, May 2d, 1873. 



Present, 14 members. 



Prof. Chase in the Chair. 



Letters accepting membership in the Society were received 

 from Henry "W. Acland, dated Radcliffe Library Museum, 

 Oxford, England, April 10th, 1873 ; James Ed. Oliver, dated 

 Cornell University, Ithaca, X. Y., April 21, 1873 ; John 

 Fulton, dated Saxton, Bedford Co., Pa., April 21, 1873, and 

 Theo. D. Rand, dated 17 South Third Street, Philad a, May 

 1, 1873. 



Letters of Envoy were received from the Physical Observa- 

 tory, St. Petersburg, March, 1873 ; the Austrian Geographi- 

 cal Society, Vienna, Jan. 3, 1873 ; Prof. G. L. Vose, per S. 



