﻿TABLE OF CONTENTS. 



Article I. (1087.) Methods for the Determination of 

 Organic Matter in Air. By David Hen- 

 dricks Bergey. 1896. Pp. i, 28. 



Article XL (1071.) Air and Life. By Henry De Ya- 

 RiGNY. 1896. Pp. 69. 



Article III. (1072.) The Atmosphere in Relation to 

 Human Life and Health. By Francis 

 Albert Rollo Russell. 1896. Pp. 148. 



Article IV. (1073.) The Air of Towns. By J. B. Cohen. 

 1896. Pp. 41. "With 21 plates of illustrations. 



Article Y. (1077.) Equipment and Work of an Aero- 

 Physical Observatory. By Alexander 

 McAdie. 1897. Pp. 80. 



Article YI. (1125.) An Investigation on the Influence 



UPON THE YiTAL RESISTANCE OF AnIMALS TO 



the Micro organisms of Disease brought 



ABOUT BY prolonged SOJOURN IN AN IMPURE 



Atmosphere. By D. H. Bergey. 1898. 

 Pp. 10. 



Article YIL (1170.) A Select Bibliography of Chemistry, 

 1492-1897. By Henry Carrington Bolton. 

 First Supplement. 1899. Pp. ix, 489. 



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