THE ATMOSPHERE. 



.Atmospheric Air is Material. Its Color. Cause of the Blue Sky. Cause of the Green Sea. Air 

 lius Weight. Experimental Proofs. Air has Inertia. Examples of its Resistance. It acquires 

 Moving Force. Examples of its Impact. Air is Impenetrable. Experimental Proofs. Elastic 

 and compressing Forces equal. Limited Height of the Atmosphere. Elasticity proportioned to 

 the Density. Experimental Proofs. Internal and External Pressure on close Vessels containing 

 Air. 



