NOTICES OF NORTH AMERICAN FUNGI. 101 



tectis, sporis filiformibus apice hamatis. On dead Solida/jo. New 

 England. Russell. No. 5814—5915. 



Pustules minute slightly convex, covered with the cuticle ; 

 spores filiform, curved over at the apex, '001 long. 



472. Phlyctsena orthospora. B. <fc 6*. — Pustulis oblongis fusco- 

 marginatis ; sporis oblongis. On Phytolacca. Pennsylvania, 

 Michener. 



Pustules oblong covered with the cuticle, with a narrow brown 

 border; spores oblong, -00062 long. 



* Melanconium magnum. B. — On Acer. Connecticut. 

 Wright. No. 5615—5046 ; spores -001--0015 long. 



473. Melanconium cellulosum. B. <fc C. — Pustulis ellipticis, lima 

 apertis ; stromate celluloso ; sporis oblongis nucleatis. On stems 

 of Bhus radicans. Pennsylvania. Michener. No. 5130. 



Pustules elliptic covered with the cuticle which splits along the 

 major axis, 'cellular within ; spores oblong with a nucleus -00057 

 long. 



474. Melanconium cinctum. B. <f C— Pustulis nigris epider- 

 mide cinctis ; sporis obovatis. On small branches of Castanea 

 jmmila. Mountains Car. Sup. No. 4451. 



Pustules black, surrounded by the cuticle ; spores broadly obo- 

 vate, -0008 long, with a minute nucleus. 



475. Melanconium varium. B. $ C— Pustulis liberis elevatis 

 subtruncatis ; sporis oblongis. On dead twigs. New England. 

 Sprague. No. 5819. 



Pustules free, somewhat truncate above ; spores oblong, -00016 

 long, sometimes slightly curved. 



>.)*-* 



SORBY'S RESEARCHES ON CHROMATOLOGY. 



Mr. H. C. Sorby, F.R.S., has published, in the Proceedings of 

 the Royal Society, some of the results of his examination of Algae 

 and other Cryptogamia, by spectrum-analysis. We quote the fol- 

 lowing : — 



Connexion of the different Groups of Alga. 



Perhaps I cannot choose a better illustration than that furnished 

 by tbe different groups of Alga — the olive, the red, and the green. 

 They contain at least twelve different colouring-matters, distributed 

 very differently, in such a manner as to connect, and yet to dis- 

 tinguish, the different groups very characteristically. 1 have not 

 yet made any accurate quantitative analyses, and therefore express 



