496 BOTANICAL GAZETTE [DECEMBER 
PLATE XXXIII.—Transverse section of wood of Arizona sycamore 
(P. Wrightii), showing parts of two annual rings of Dake ew, early wood; 
lw, late wood; v, vessels; wf, wood fibers; pr, pith ra 
PLATE XXXIV. —Transverse section of wood - ‘Colifotnia sycamore 
(P. racemosa), showing parts of two annual rings of growth: ew, early wood; 
lw, late wood; v, vessels; wf, wood fibers; pr, pith rays. 
PratE XXXV.—Tangential section of wood of common sycamore 
(P. occidentalis), showing pith rays (pr) in cross-section and vessels (v) and 
wood fibers (wf) in longitudinal section. 
Pirate XXXVI.—Tangential section of wood of Arizona sycamore (P. 
Wrightii): v, vessels; wf, wood fibers; pr, pith rays. 
PLaTE XXXVII.—Tangential section of wood of California sycamore 
(P. racemosa): v, vessels; wf, wood fibers; pr, pith rays. 
PLaTtE XXXVIII.—Radial section a wood of common sycamote (P. 
occidentalis): v, vessels; wf, wood fibers; pr, pith rays. 
