[ 477 ] 



contained more of it in that ftate ; but in this ftate of coalelcence 

 they retain the eledric fluid more flightly and become co?idu£iors, 

 infulated by the drier air that furrounds them. 



7''. As the various fubflances which form the furface of the 

 globe are varioufly heated, fo alfo are the vapours they emit, and 

 which are united to the air incumbent over them, confequently 

 they involve, when united to air, different portions of the eledtric 

 fluid. 



Confequently i''. The vapours emitted in different lati- 

 tudes contain different portions of eledric matter, bearing 

 a porportion to the temperatures of thofe latitudes. 



2*^. So alfo do the vapours emitted at different feafons of the 

 year. 



3*^. So alfo thofe emitted from the fea, and thofe emitted 

 from land between the tropics and the warmer trads, if 

 not mountainous 5 the former contain leaft, and the latter 

 mol| of the eleflric fluid. 



4°. In the colder regions, in fummer, the marine vapours 



alfo contain leaft, and thofe from land contain moft of 



this fluid. But in winter the marine contain moft, and 



thofe from land leaft. 



Vol. VIII. 3O 5?. For 



