6 
GEOLOGY. 
Fig. 12. Cardita subtenta, natural size; a, end view, specimen 
in right side partly covered with rock. — p. 726. 
Fig. 13. Pecten propatulus, natural size; a, profile of costse. — 
p. 726. 
PLATE 19. 
Fig. 1. Terebratula nitens, natural size; 1 a, end view. — 
p. 726. 
Fig. 2. ?— p. 727. 
Figs. 3, 4, 5. Dolium petrosum, shells of different ages. — p. 727. 
Fig. 6. Sigaretus scopulosus, natural size ; a, another view ; 
b, e, a smaller specimen. — p. 727. 
Fig. 7. Natica saxea ; a, b, natural size. — p. 727. 
Fig. 8. Bulla petrosa, natural size. — p. 727. 
Fig. 9. Crepidula prjerupta; a, under view; 10 a, b, views of 
cast.— p. 727. 
Fig. 11. Crepidula ? a, b, views of cast. — p. 727. 
Fig. 12. Rostellaria indurata, cast, natural size. — p. 727. 
PLATE 20. 
Fig. 1. Cerithium mediale, natural size; a, internal cast. — 
p. 728. 
Fig. 2. Buccinum devinctum, cast, natural size; a, another view. 
— p. 728. 
Fig. 3. Fusus geniculus, natural size. — p. 728. 
Fig. 4. Fusus corpulentus, internal cast, natural size. — p. 728. 
Fig. 5. Nautilus angustatus, imperfect; fig. 6, young of 
same. — p. 728. 
Fig. 7. Teredo substriata, a, another specimen; b, internal 
cast. — p. 728. 
Figs. 8 to 14. Undetermined species. — p. 728. 
PLATE 21 
Fig. 1. Imperfect cast. 
Figs. 2, 3, 4. Foraminifera. — p. 729. 
Figs. 5, 6. GaLerites oregonensis. — p. 729. 
Fig. 7. Undetermined. — p. 729. 
Fig. 8. Undetermined. — p. 729. 
-''Fig. 9. Abies robusta, natural size. — p. 729. 
'"Fig. 10. Species of Juniperus, Taxodium, Smilax? etc., natural 
size. — p. 729. 
Fig. 11. Coralline Alga, natural size. — p. 730. 
