﻿96 



KEY TO ABBEEVIATIONS USED IN SECTION III. AND IN VELOCITY DIAGRAMS. 



Tlie small figures on curve, fig. 606, indicate the number of observations made to obtain the points to which they 



are attached. 



P] = commencement of first phase. 



Po = conimoncement of second phase. 



P3 = maximum of third phase or hirge waves. 



Az. = Azores. 



B. = Bombay. 

 Ba. = Batavia. 



Bal. = Baltimore. 

 Bi. = Bidston, near Liverpool. 



C. = Calcutta. 

 Cai. = Cairo. 



Ch. = Christchurch, New Zealand. 

 Cor, = Cordova, Argentina. 

 CT. = Cape Town. 



D. = Dorpat. 

 Dis. = Discovery. 



E. = Edinlmrgh. 

 H. = Hamburg. 



Ho. = Honolulu. 



I. = Irkutsk. 



K. = Kew. 

 Ko. = Kodaikanal. 



M. = Madras. 



Ma. = Manila. 



Mau. = Mauritius. 



Me. = Mexico. 



N. = Nicolaiew. 



P. = Perth, W. Australia. 

 Pa. = Paisley. 



S. = Shide, Isle of Wight. 

 St. = Strassburg. 

 St.H. = St. Helena. 

 SF. = San Fernando, Spain. 



T. = Toronto. 

 Ta. = Taschkent. 

 Ti = Tiflis. 

 To. = Tokio. 

 Tr. = Trinidad. 



V. = Victoria, B.C. 



W. = Wellington, New Zealand, 



