JOHNSON AND HEnsman—A List of Irish Corallinacee. 25 
organic and volatile matter; it is inappreciable in the Bantry sand, 
but may amount to about 2 per cent. in the Knockboy. 
“In both samples the efficacy of the sand as a fertilizing agent 
must be attributed mainly to the carbonate of lime; phosphoric acid 
and nitrogen are not present in sufficient quantity to produce much 
effect. The Knockboy sand, however, contains a notable quantity of 
potash in addition to carbonate of lime. This potash would render the 
sand a valuable fertilizing agent in potato cultivation. 
‘“* (Sed.) “«Ricoarp J. Moss, F.¢.8., F.1.C., 
“« Chemical Analyst, Royal Dublin Society. 
‘©THE SECRETARY, 
‘¢ AGRICULTURAL DEPARTMENT, 
_ “Trisa Lanp Commission.”’ 
The number of species recorded as Irish in Harvey’s Phycologia 
Britannica (1846-1851) is 18. 
The useful “ Revised List of British Marine Algz,” con- 
tributed by Holmes and Batters to the Annals of Botany, 1891, 
adds nothing to Harvey’s records of the group. This list con- 
tains some 30-35 Irish species, of which those marked * are 
additions to the list. There are several forms, not in the list, 
awaiting more complete material, or comparison with specimens 
from different seas, for their satisfactory identification. 
Our work has been materially aided by the Royal Dublin 
Society, as already mentioned, by the Fauna and Flora Com- 
mittee of the Royal Irish Academy, as well as by the Royal 
Society. 
Our thanks are due to Dr. M. Foslie, through whose hands the 
Lithothamnion specimens have passed, and from whom the Museum 
has received a fine set of Norwegian Corallinacec. 
CORALLINACEAS. 
*SCHMITZIELLA, Born. et Batt. 
S. endophiwa, Born. et Batt. 
Farrihy Bay, county Clare, 1891; Calf Island, county Cork ; 
Dalkey, county Dublin. 
