83 CHALK SERIES S C 1752 A England; chalk S C 1753 B [No locality given]; chalk S C 1754 C [No locality given]; chalk S P C 1755 D [No locality given]; chalk S C 1756 E Dover, England; chalk S P C 1757 F Dover, England; chalk; [Note by Charles Stodder:] "This catalogue cannot belong to this slide."; cleaned S P C 1758 G Chalk C 1759 H Dover, Sussex, England; chalk S C 1760 I [No locality given]; chalk from interior of a flint; silicified polythalamia from Dr. Mantell S C 1761 J Menton, France; chalk S C 1762 K Menton, France; chalk C 1763 L Oran, Algeria, Africa; chalk, marl; Ehrenberg C 1764 M Oran, Algeria, Africa; chalk, marl; Ehrenberg