La REPORTS FROM THE SECTIONS. 
Notes on some local Species of Diatomacee. 
By G. D. Hirst. 
[Read before the Microscopical Section, 13 August, 1877. 
_ Ar the last meeting of this Section it was suggested by our 
Chairman that, as probably many marine and fresh water 
having more time and talent than to devote to this 
very interesting branch of microscopical research. There is 1n 
almost every department of Natur. on this continent 
yet been done to classify the very num species which may be 
my s 
very favourable I determined to try again, and a 
yards Masia up the bay I pees | scrapings from some of the 
rather smaller than the English species, but the cross-lines 
coarser ; I measured them 34,000 to the inch. Prichard in his 
Infusoria gives 38,000 as the average for English and Continental 
species. The following ]so in tolerable abundance in the same 
gathering :—Pleurosigma elongatum, diagonal lines 57,000 to the 
