in Ae lower beds of the Ironshot Oolite, as the specimen 

 now figured is from near Yeovil, and contains vestiges 

 of ferruginous grains. I am indebted to the kind atten- 

 tion of Dr. W. E. Leach for preserving it from the 

 gothic hands of the mason, who is often as destructive 

 of the essential characters of fossils, as some dealers 

 still continue to be of the natural forms of recent shells, 

 and who rob them without mercy of venerable coats that 

 had resisted with various success the combined efforts of 

 numerous sea-born enemies, whose ravages even, leave 

 marks more worthy of contemplation than the formal 

 beauty betrayed by the file or polishing brush. 



Fig. 2 shews a cast of the margin ; it is from a part 

 of an outer whorl found at Shotover Hill, near Oxford. 



A section, shewing the chambers filled partially with 

 crystallized Carbonate of Lyme, is given at tab. 12 of 

 British Mineralogy. It often extends to 18 inches or 

 more in diameter, and when cut thin and viewed by 

 transmitted light, offers a specious excuse for the 

 Mnscientific mason. 



