370 



compared with that of the embryo , the hitter appeared to be 

 about one third the size of the former. 



A specimen of muscular fibre, taken from the leg of the mus- 

 quito, was exhibited, to show the transverse strise and the central 

 row of corpuscles or nuclei of the primitive cells. 



Another specimen, from the wing of the musquito, on exami- 

 nation under the microscope, proved that the muscular tissue of 

 this part consisted of moniliform fibrillce, not united by sarco- 

 lemma. 



Mr. Alger exhibited two specimens of native copper from 

 Lake Superior, containing large quantities of native silver. 

 One weighed about two and a half pounds, and contained 

 about thirty dollars' worth of silver. 



Dr. Durkee exhibited a remarkable cabbage plant, on 

 which forty-three completely developed heads had taken 

 the place of the original one, which had been broken oft 

 after coming to full development, the stalk being about one 

 and a half inches in diameter at the time. The supplement- 

 ary cabbages were of various sizes, from that of an orange 

 to that of a child's head. 



Mr. Sprague thought that this uncommon growth was the 

 result of a remarkable development of the axillary buds. 



Mr. John P. Marshall was elected a resident member. 



October 19, 1853. 

 The President in the Chair. 

 Dr. B. S. Shaw was chosen Secretary pro tem. 

 A letter was received from Dr. S. L. Abbot, addressed to 



