1889.] NATURAL SCIENCES OF PHILADELPHIA. 49 



they proceed towards the surface of the sporangium, and join into 

 a dense, compact net, the ends of the last branches attached to the 

 inner side of the sporangium-wall ; lime-granules in- the capillitium, 

 very few, small, white, fusiform ; spores bright brown-violet (brown 

 in the mass), very delicately warted, 7-9 mk. 



Fairmoiuit Park, Phila., Pa. and Ohio (Morgan.) 



This Tilmadoche has marked characteristics. The stipe for a short 

 distance from the base is very dark, but suddenly changes to a yel- 

 lowish-white. When the sporangium bursts, the top part of the wall 

 generally pulls out the capillitium immediately over the central lime- 

 granule, so that the latter is exposed to view. In some cases, when 

 quite large, the granule falls out leaving a circular empty space in 

 the center of the sporangium, without disturbing the outline of the 

 capillitium. The capillitium is very flimsy, and its faint bluish tint 

 in the mass quite marked under a parabolic reflector. The metallic 

 luster of the sporangium-wall is constant in the specimens collected 

 during different summers. 



March 26. 

 Rev. Henry C. McCook, D. D., Vice-President, in the chair. 



It was resolved that evenings as follow be assigned to the sec- 

 tions named for the purpose of holding meetings in conjunction with 

 the Academy: — biological and Microscopical Section, the third 

 Tuesday of each month ; the Mineralogical and Geological Section, 

 the first Tuesday of each alternate month beginning with April ; the 

 Conchological Section, the second Tuesday of each alternate month 

 beginning with May ; the Botanical Section, the first Tuesday of 

 each alternate month beginning with May. 



Mr. Louis Schneider was elected a member. 



The following were ordered to be printed : — 



