BONNEMAISONIA HAMIFERA HARIOT IN NATURE AND IN CULTURE(2) (3).

In culture tetraspores of the sporophyte (Trailliella intricata) of Sonnemaisonia hamifera gave rise to male gametophytes only. In the Gulf of St. Lawrence tetrasporangia occur annually during the autumn, but mature gametophytes have not been recorded.

SPORANGIA OF RALFSIA FUNGIFORMIS (GUNN.) SETCHELL ET GARDNER(1) (2).

Unilocular and plurilocular sporangia of Ralfsia fungiformis are, for the first time, recorded for North America. The validity of certain types of structures, considered by some authors as plurilocular sporangia, is discussed.

ALARM GRANDIFOLIA J. AGARDH FROM NOVA SCOTIA(1).

Alaria grandifolia is recorded from Nova Scotia for the first time and is briefly compared with A. esculenta from this area.

ANTIALGAL ACTIVITY OF SOME SIMPLE PHENOLS(1).

The antialgal activity of a number of simple phenols was examined for their effect on the growth of 7 species of unicellular marine algae. The 3 knoiun algal phenols, 5-bromo-3,4-dihydroxybenzaldehyde; 2,3-dibromo-4,5-dihydroxybenzylalcohol, and 3,4-dihy-droxyphenylethylamine, were highly toxic as were other ortho dihydroxy compounds. Monohydroxy compounds were notably less toxic.