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VOL. III. 



No. 18. 



Science 



progress 



A MONTHLY REVIEW OF CURRENT SCIENTIFIC INVESTIGATION. 



=*= 



Conducted by HENRY C. BURDETT. 



Edited by J. BRETLAND FARMER, M.A. 



WITH THE CO-OPERATION OF THE FOLLOWING EDITORIAL COMMITTEE:— 



H. E. ARMSTRONG, F.R.S., Professor of Chemistry at the City and Guilds of London Institute for Technical 



Education. 

 W. R. DUNSTAN, F.R.S., Professor of Chemistry, St. Thomas' Hospital and Pharmaceutical Society, 



London. 

 G. F. FITZGERALD, F.R.S., Professor of Natural and Experimental Philosophy in the University of Dublin. 

 C. S. SHERRINGTON, F.R.S., St. Thomas' Hospital, London. 



J. W. JUDD, C.B., F.R.S., Professor of Geology, Royal College of Science, London. 

 W. J. SOLLAS, F.R.S., Professor of Geology in the University of Dublin. 

 G. B. HOWES, F.Z.S., Professor of Zoology, Royal College of Science, London. 

 H. MARSHALL WARD, F.R.S., Professor of Botany, Royal Indian Engineering College, Cooper's Hill, 



Staines. 



AUGUST, 1895. 



CONTENTS. 



CHEMICAL AFFINITY. By JAMES WALKER, Ph.D., D.Sc, Professor of Chemistry in 

 University College, Dundee ... 



VIEWS ON MINERAL SPECIES. By H. A. MIERS, M.A 



INSULAR FLORAS (Part V.). By W. BGTTING HEMSLEY, F.R.S., Royal Herbarium 

 Kew 



THE RESERVE MATERIALS OF PLANTS. By J. REYNOLDS GREEN, M.A., F.R.S. 

 Professor of Botany to the Pharmaceutical Society of London 



THE SPACE RELATIONS OF ATOMS. By ARNOLD EILOART, B.Sc, Ph.D. 



APPENDICES: 



I. NOTICES OF BOOKS 



II. CHEMICAL LITERATURE FOR JUNE, 1895 



419 

 429 



447 



476 

 490 



XLV 

 XLVII 



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