x SCIENTIFIC PAPERS 



PAQR 



THE DEVIATION OF THE OSCILLATIONS OF A VISCOUS 



SOLID FROM THE ISOCHRONOUS LAW . . .109 



WILLIAM PEDDIE 



Professor of Physics at University College Dundee 



THE DISSIPATION OF ENERGY IN TORSIONAL OSCILLA- 

 TION . . II3 



JAMES BONN YM AN RITCHIE 

 Carnegie Research Scholar at University College Dundee 



WAVE IMPACT ON ENGINEERING STRUCTURES . '. 129 



ARNOLD HARTLEY GIBSON 



Professor of Engineering in the University 



and 

 WILLIAM NELSON ELGOOD 



CHEMISTRY 



THE PREPARATION OF PARTIALLY METHYLATED SUGARS 



AND POL YHYDRIC ALCOHOLS . . . . 155 



JAMES COLQUHOUN IRVINE 

 Professor of Chemistry in the United College St Andrews 



A GENERAL REVIEW OF PURDIE'S REACTION . .177 



CHARLES ROBERT YOUNG 



Formerly Assistant to the Professor of Chemistry in the 

 United College St Andrews 



THE PREPARATION OF ANHYDRIDES OF ORGANIC ACIDS 225 



WILLIAM SMITH DENHAM 



Assistant in the Department of Chemistry at the United College St Andrews 



INDIUM AND THALLIUM IN CRYSTALLOGRAPHICAL RE- 

 LATIONSHIP . , . . . . .241 



ROBERT CHARLES WALLACE 

 Lecturer on Geology and Mineralogy in the University of Manitoba 



