100. PICEA ALBA 



White Spruce. 



TRANSVERSE SECTION. 



RADIAL SECTION. 



TANGENTIAL SECTION 



Schimmel-Fichte. 



Sapin blanc. Sp. Abeto bianco. 



Published and Sections made by Romeyn B. Hough, B. A.. Lowllle. N. Y., U. S. A. 



