

PROCEEDINGS OF THE SOCIETY. 729 



bracts, pedicels, sporangia, and spores ; S. Daicsoni, long. Beet, showing 

 axis, bracts, &c. ; Lepidodendron selaginoides, transv. sect, of stem show- 

 ing wood, phloem, inner and outer cortex, periderm, and leaf-bases ; 

 L. selaginoides, transv. sect, of stem showing primary and secondary 

 wood, cortex, and periderm ; L. selaginoides, long. sect, of advanced stem 

 showing same features as previous slide ; Bothrodendron mundum, transv. 

 sect, of bifurcating stem showing the two steles already separated by 

 the cortex ; Lepidostrobus Veltheimianus, transv. sect, of cone through 

 microspore region, showing axis surrounded by microsporangia ; L. Velt- 

 heimianus, transv. sect, of cone through megaspore region, showing axis 

 surrounded by megasporangia ; L. Veltheimianus, long. sect, of cone, 

 almost complete, showing microsporangia only ; Spencerites insignis, 

 transv. sect, of cone showing axis surrounded by sporangia containing 

 winged spores ; Lepidocarpon Wildianum, section of " seed," the interior 

 of which is partly filled by the prothallus ; Lepidocarpon Lomaxi, 

 section of " seed," the interior of which is occupied by the prothallus ; 

 Fern-sporangia, sorus consisting of mauy sporangia showing annulus 

 and containing spores ; Lyginodendron Oldhamium, transv. sect, of stem 

 showing pith, primary and secondary wood, phloem, leaf-trace bundles, 

 and cortex. 



Mr. Edmund J. Spitta : — Apparatus for obtaining Monochromatic 

 Light with an ordinary mixed jet ; Amphipleura pellucida shown under 

 the Microscope with monochromatic light obtained by above apparatus. 



New Fellows : — The Eight Hon. Lord Kayleigh was elected an 

 Honorary Fellow. The following were elected Ordinary Fellows: — 

 Messrs. George Chandler Whipple and J. Hilliard Johnson. 



