66 



The Scottish Naturalist. 



the cells found in this position it is our present purpose to 

 examine somewhat minutely. For this purpose they are further 

 enlarged in Fig. II. to 1500 diameters. The barren surface cells 



Fig. II. — THE COMMON MUSHROOM (aGARICUS CAMPESTRIS, L. 



ction through hynienial or spore-bearing surface ; showing simple cells (c) ; cystidia 

 with granular contents at u, d, — basidia, E, E, E, — and gradual development of 

 spores, G, G, G, upon the spicules, F, K, f : X 1500 diam. 



are seen at c, c, c. Intermediate with these are larger cells, 

 D, D, termed cystidia, and believed by many botanists to be 



