CONTENTS 



Original Papers 



Page 

 Physics. — The nitrogen thermometer scale from 300° to 630°, with direct de- 

 termination of the boiling point of sulfur. Arthur L. Day and Robert 



B. Sosman .\ 167 



Comparison of the resistance thermometer scale with the nitrogen scale 



from 300° to 630°. H. C. Dickinson and E. F. Mueller 176 



On the deduction of Wein's displacement law. Edgar Buckingham 180 



A new precision colorimeter. P. G. Nutting. 183 



Geology. — Notes on the geology of the &an Rafael Swell, Utah. Charles T. 

 Lupton 185 



Abstracts 



Geodesy 189 



Geology ■<■ 191 



Phytopathology 193 



