THE MICROSCOPE 



JUIstK, 1894. 



Number 18. 



New Series. 



Objects Seen Under the Microscope. 



XIII. — SECTION OF STEM OF SPRUCE. 

 (Pen Drawing,) 

 One of the premium slides prepared by Mr. Sutton, 

 of Philadelphia, is the spruce stem shown in cross-sec- 



tion above. It will be interesting to study this in con- 

 nection w4th the sections shown in the February num- 

 ber, pp 17-21, and to notice the difference in the struc- 



