PLATE C XVI II. 



Page. 



Figs. 1,2. Pityoxylon amethystinum n. sp. Specimen Ridge 764 



3,4. Pityoxylon ALDEHSONi ii. sp. Specimen Ridge 763 



5. Quercinium lamarexse n. sp. Specimen Ridge 771 



6,7. Ritamnacixivm radjatum Felix. Specimen Ridge 769 



1. Radial section x 90 diameters. Shows wood cells with single row of pits, and 



spring and fall wood; also medullary rays. 



2. Tangential section x 90 diameters. Shows the long wood cells and short medullary 



rays. 



3. Radial section X 90 diameters. Shows wood cells with a single row of pits. 



4. Transverse section through annual ring, X 90 diameters. 



5. Transverse section X 320 diameters. Shows the fall and spring wood. 



6. Transverse section x 90 diameters. Shows medullary rays of short cells, thin-walled 



wood cells, and series of ducts. 



7. Tangential section x 90 diameters. Shows wood cells, medullary rays, and dotted 



ducts. 



876 



