Manchester Memoirs, Vol. Hi. (1908), No. JJ. 3 



Dulesgate, and A204 (my collection) from a coal seam in 

 the second grit at Laneshaw Bridge, collected by Mr. P. 

 Whalley. These sections are all transverse sections of 

 whole cones, there being two in section A 188. No really 

 good longitudinal section of a whole cone exists, that 

 figured by Williamson being badly preserved. 



Sections R406 and O461 in the Manchester Museum 

 are figured in this paper, and many other sections 

 shewing isolated sporophylls have been used. 



Description of Cone. 

 General MorpJiology. 



Except for the presence of a large and very con- 

 spicuous ligule, the cone much resembles that of Lyco- 

 podiuni in general structure (see Text-fig. i). 



It consists of an axis bearing short sporophylls 

 composed of a small horizontal limb and a lamina on the 

 surface of the cone. 



On the upper surface of the horizontal portion, and 

 about half-way between the axis of the cone and the 

 lamina, a single sporangium is attached. 



Between the attachment of the sporangium and the 

 lamina is a large ligule set in a deep ligular pit. 



Each sporophyll receives a single vascular bundle 

 from the axis. 



Size of the Cone. 



In a compressed state, and with the appendages 

 much disarranged, three transverse sections of the cone 

 measure 10, 5, and 2 millimetres in greatest diameter. 

 These differences are correlated with corresponding dif- 

 ferences in the diameter of the axis which measures 

 in the first two cases 3 and 2 millimetres in diameter 

 respectively. 



