EXPLANATION OF PLATES. 



Fig. 1, 



laxum, T. and B. 



Plate I. 



Sphmrophoron coiralloides, a 

 (p. 7.) 



A. Vertical section of the Thallus and Apothecium. b. Sporidia. 



a. Medullary layer of the Thallus. b. Asci. c. Torus, d. Spo- 

 ridia discharged of internal granular matter, e. Sporidia, 

 perfect, with internal granular matter, f. Cortical layer. 



The figures indicate the powers of Powell and Lealand's micros- 

 cope, which have been used in magnifying the objects, e.g. 

 1.1. signifies that an object glass of I -inch focus has been 

 used with the first or longest eye -piece, ^ 3 = an object 

 glass of ^ of an inch focus with the third and shortest eye- 

 piece, and so on ; the first figure or fraction always mean- 

 ing the focus of the object glass, and the second the par- 

 ticular eye-piece used with it. The following table exhibits 

 an approximation to the magnifying powers of the object- 

 glasses with each eye-piece : 



The drawings have been reduced one third, consequently the 

 engraved figures are, in reality, one third less in size than the objects 

 appeared under the microscope. 



2. SplicBroplioron coralloides, /3. ccespitosum^ T. 

 and B. (p. 8.) 



g, Sporidia in an old state. 

 The other letters refer to the same parts as in the preceding. 



