Nature, Volum 72

acid action annum apparatus application Astronomical atoms B.Sc benzene birds Botany British Cambridge carbon catalogue chemical Chemistry College colour committee contains course D.Sc Diplodocus electric Engineering examination exhibited experiments further particulars Geology give given HATTON GARDEN HIGH HOLBORN hydrogen illustrated important India Institute instruments interesting investigation July June Laboratory larvæ lectures Leptoplana London MAKERS Manufacturers Mathematics Mechanics ment meteorological method Microscopic minerals Museum National Physical Laboratory Natural History nitrogen observations Observatory obtained optical paper Pedicellina PETROGRAPHY photographs physical plants plates Post Free practical present president pressure Price Prof Professor published quaternion radiation radio-activity RADIUM BROMIDE rainfall recent rocks Royal Salary School scientific Society solar South Africa species specimens spectroheliograph stars Street Technical Telegraphy temperature theory tion tube University Variable Stars volume