Annual Report.] 216 [May 3. 



Bicknell, E. On a Method of producing Low Powers for the Mi- 

 croscope. October 12, 1870. 



On Flexible Muscular Preparations. November 2, 1870. 



On the Absorptions of the Frustules of lsthmia. November 9, 

 1870. 



On the Structure of Whalebone. November 9, 1870. 



Remarks on Microphotographs of Amphipleura pellucida and Sur- 

 rirella gemma, taken by- Dr. Woodward, U. S. A. February 8, 

 1871. 



Remarks on the Sense of Smell, as the guide of many lower ani- 

 mals in seizing their prey. April 5, 1871. 



Bliss, Richard, Jr. On the Osteology of Structure of the dorsal 

 fin of Doras. June 15, 1870. 

 On markings which distinguish young from adult fishes. January 

 18, 1871. 



Bouve*, T. T. On Conglomerate. October 19, 1870. 



Brewer, T. M. On the Nest of the Baltimore Oriole, made of 

 Spanish Moss. May 18, 1870. 

 On the Nests and Eggs of some of the most rare Birds of high 



latitudes. February 1, 1871. 

 Remarks on Casuarius Bennettii. March 1, 1871. 

 On the Varieties of the Crow-Blackbird. April 19, 1871. 



Brigham, Wm. T. On Meteorites from Tucson, Arizona. May 18, 



1870. 

 On a deposit of Lava on the Columbia River. May 18, 1870. 

 On the Sequoia gigantea. Mcy 18, 1870. 

 On Morchella from Grafton, Mass. May 18, 1870. 

 On the System of Volcanoes in Mexico. February 15, 1871. 

 On Water as an element of Volcanic Eruptions. February 15, 



1871. 

 Remarks on a Conglomerate Lava in one of the Hawaiian Islands. 



February 15, 1871. 



Brown, F. H. On Ferns and Fern Allies of Medina and Porto 

 Santo. May 18, 1870. 



Burbank, L. S. On the Origin of the Eozoonal Limestone of 

 Chelmsford and vicinity. April 19, 1871. 



