21 6 A YEAR WITH NATURE. 



may be interesting to give in conclusion the regular flight 

 lines. They cross the Mediterranean Sea by one of four 

 established routes: 



1. Across the Straits of Gibraltar. 



2. From the Coast of the Gulf of Genoa, through Corsica 

 and Sardinia, to Tunis. 



3. From Italy, via Sicily and Malta, to Tripoli. 



4. From Asia Minor, by Cyprus, to Egypt. 



