no STUDIES IN FOSSIL BOTANY 



only the case at the base, but the difference may be 

 merely a matter of preservation. The spores in each 

 sporangium are numerous, and closely resemble those 

 of Sphenophyllum Dawsoni, the resemblance extending 



Fig. 46. — Btrwmanites RGmeri. A. Lamina of sporangiophore, cut nearly parallel to its 

 upper surface, and above the insertion of the sporangia. v.b., vascular bundle. E. 

 Longitudinal section through upper part of sporangiophore, showing insertion of 

 sporangium, jted., pedicel; sm, part of sporangium ; j, spores. X about 60. After 

 Solms-Laubach. 



to the most minute details of structure of the spore- 

 membrane. 



There can be no doubt that this discovery of Count 

 Solms-Laubach's threw a great light on the morphology 



