Hoy. £?«■• 7'mr,, 73, Plate 13. 



1890 1900 



GODTHAAB, 

 GREENLAND 



(oct-mar) 50- 



STYKKISHOLM 

 ICELAND 5a1 



(oct-mar) 745. 



VALENCIA 

 IRELAND 



(OCT - MAR) 



VIENNA 

 AUSTRIA 



(sep-feb) 



MADRID 



9- 



SPAIN 



7- 



(sep-feb) 705- 



DELGADA 





AZORES 



*r 



(oct -apr) 761 





7- 



CORDOBA 





S.AMER* 



6- 



(APR - SEP.) 



5- 



724- 



1870 



Piate 12.— Showing the Relationship between the Short Period Pressure Variations for pla.es in Western Knrope, ami the 

 tno'Maiu Types of Pressure Variations, namelj : India ( + ) and Cordoba ( - ). This Philo should be »tudied in relation to the 

 map in lig. 1. .Yo/e. — The continuous and broken vertical lines drnitc the ■ i • t - of stuispot maxima and minima a> 

 determined from the mean daily areas of both hemispheres of the ran. 



