78 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



Fig. 8a. Lycopodites Milleri. From a quarry four miles east of Thurso. One- 

 fourth of the natural size. (Mr. J. Miller's cahinet.) 



Fig. Sb. The same ; a small portion, magnified. 



Fig. 9a. Lepidodendron nothum, (Unger) ?, portion of stem ; natural size. From 

 Harland, Wick. (Geological Survey collection.) 



Fig. 9b. Magnified portion of the cast of another specimen, showing the arrange- 

 ment of the bracts. Magnified three times. From Stromness, Orkney. 

 (Geological Survey collection.) 



Fig. 9c. Portion of fig. 9a, magnified. 



