1871.] 221 [Annual Report. 



Shalee, N. S. On the Progress of Life on the several continents. 



June 15, 1870. 

 On the Geological Structure of the Wachusett range. June 15, 



1870. 

 On Stratification at Braintree. October 19, 1870. 

 On Koxbuiy Conglomerate. October 19, 1870. 

 Changes on the Atlantic Coast, and denuding action of Ice. 



November 2, 1870. 



On the life of lower latitudes passing further north. January 18, 

 1871. 



On the Chesapeake Bay and the shore line thence southward. 

 February 1, 1871. 



Sprague, P. S. On Parasitic Insects. October 26, 1870. 



Stodder, C. On a section of Tiger wood from Brazil. May 11, 

 1870. 

 On Albumen coagulated with carbolic acid. October 12, 1870. 

 On a series of lenses constructed by R. B. Tolles. January 11, 

 1871. 



Tuttle, A. On a form of Paramcecium from Fresh Pond. Novem- 

 ber 9, 1870. 

 On the Fissiparous reproduction of Stentor. February 8, 1871. 



Uhler, P. R. Notice of some Heteroptera in the collection of 

 Dr. T. W. Harris. February 1, 1871. 



Waterstojst, R. C. On a visit to California. November 16, 

 1870. 



Wilder, Burt G. On Intermembral or Limb Homologies. 

 April 5, 1871. 



Winslow, C. F. On a mortar-shaped pebble from the banks of 

 the Rhine. October 5, 1870. 



At the beginning of the year, a committee was appointed 

 to look after the general meetings and solicit the proper kind 

 of communications. The list above and the larger average 

 attendance show a decided improvement resulting from this 

 measure. 



