CONTENTS 



Original Papers 



Page 



Chemistry. — On some new indicatars for the colorimetric detennination of 

 hydrogen-ion concentration. Herbert A, Lubs and William Mans- 

 field Clark 609 



Physical Chemistry. — The solubility of calcite in water in contact with 

 the atmosphere, and its variation with temperature. Roqer C. Wells. 617 



Abstracts 



Geology ' 623 



Zoology 624 



