5ol. Mag. 1873, 



Vol.X.PIIV: 



MAP OF EUROPE WITH ISOTHERMAL LINES ofJULY. 



(R&oLuyCedb iT^oniyJ^^A.Peteryyiounn's Mkytzoh" on- the Gulf - sireojnt .■ 

 Geoqrocphisch£- Mit£keilM7igeri 1870.) 



30 25 20 75 70 5 5 W /5 20 25 30 35 40 4-5 50 55 60 &B 70 



'^■''{y },. ^ To i 11.11 ."''T-c-lV:- M^:' '""-'f^nl-Ti.e'f, faopeiy. 



