114 



DYNAMIC METEOROLOGY AND HYDROGRAPHY. 



30 21 80 It 10 S _5 10 IS 20 35 30 35 W > 50 t5 to i T 



3 



i P~ Mi*. 



tfMffAr Pressure 

 \ sa A-ru meters m-hars 



r--.. 



N< 



.^-J ^ ''' <> ' <? son-tiOOm-bar.t 



;V 



s* 



S O 85 go I S 10 5 5 10 IS 5 So 5 5 '. 



tD 



10 IS go 5 30 5 5 '. 't5 SJ 55 60 65 70 



2000 iar/o- 



Strassbuty 



.S(. Petersburg 



Fig 21. Profile curves of isobaric ajid of isosteric surfaces Each 

 parallelogram represents 10 m.t.s. isobaric-isosterie 

 unit tubes. 



10 Vs 



Fig. 20. (Continued). Field of mass, Nov. 7, 1901 



