PLATE X. 



Lcjjidostrobus levidensis, Biniiey. 



Eig. 1 (No. 25). A nearly perfect Cone from the Blackband Ironstone, near Airdrie. 

 Natural size. 



Fig. \a. A portion of the lower part of the Column, and eight Scales, supporting 

 eight Sporangia, containing Macrospores. Magnified 2^ diameters. 



Fig. \b. A Scale from the upper portion, and a Sporangium, containing 

 Microspores. Magnified 15 diameters. 



Lepidostrobus Hibbertianus, Binney. 



Fig. 2 (No. 26). An almost perfect Cone, from the Burdiehouse Limestone (Lower 

 Carboniferous), near Edinburgh. Natural size. 



Fig. 2«. A portion of the Column of the lower portion, and two Scales, supporting 

 Sporangia, full of Macrospores. Magnified 5 diameters. 



Fig. 2(5. Four of the rhomboidal Scales, or ends of Bracts, from the upper part of 

 the Cone. Magnified 5 diameters. 



