EXPLANATION OF THE PLATES. 



Plate 



Page 



Cranial Bones and Molars of Eoantkropus 

 DAWSONi, ETC., illustrating Dr. A. Siuitli 

 Woodward's paper on that fossil 



Plates 



( Apparatus used in Surveying and Levelltngthe ^ 

 Surfaces op Septa and of Whorls ; Dacty- j 



LIOCERAS C03IMUNE, A^Jy SePTAL SECTIONS DRAWN 



FROM THE Same; Devblopmeni of the Septum | 



II-IV-( of D. C03IMUNE ; and Development of the )■ 26 



Ammonite Septum generally, illustrating the 



paper by Prof. H. H. Swinnerton & Mr. A. E. 



Trueman on the Morphology and Development 



i^ of the Ammonite Septum ) 



Y D YT / ^CLisiyA and Aclisoides, illustrating Mrs. Long- 

 \ staff's paper on those genera 



59 



/^Exposures at Ticknall ; the Southerm Fault 



I 

 VII-XI^ 



i 



AT Breedon Cloud ; Microscope-Sections of | 

 DoLOMiTic Limestone ; and Map of the Car- y 

 BONiPEROus Limestone bordering the Leices- j 

 TEusHiRE Coalfield, illustrating Mr. L. M. | 

 Parsons's paper on that formation ) 



84 



/^ Craig Llanishen, Cefn-On, etc.; the Scarp- "^ 

 Face of Cefn-On at the Head of Cwm 

 Draetiien; Macmen Quarry, etc. ; the Gorge 

 OF the Taff below Taff's Well; Escarp- 



I ment of the Main Limestone, G-artii Wood ; 



I View of Quarry North of Miskin ; and 

 XII-XVI-I Geological Maps illustrating THE Carboni- }• 111 

 FERous Limestone Series between the Taff I 

 Valley and the Ewenny and Ebbw Valleys, j 

 accompanying the papei- by Mr. F. Dixey & 

 Prof. T. P. Sibly on thci Carboniferous Lime- 

 stone Series of the South-Eastern Margin of j 



(, the South Wales CoalHeld ; 



