A Diver at Work Diving-belL 9 1 



12. Another way is simply for the work- 

 man to put on a pecu- 

 liar kind of a suit made 



of India-rubber, which 

 completely covers him 

 and keeps out the water. 

 Glass is fixed in the 

 helmet for him to see 

 through. Of course, he 

 must have air to breathe ; 

 that is supplied by a 

 hose or tube leading 

 from the inside of his 

 suit or covering up to a 

 boat, where other men 

 are carefully pumping 

 air to him through the 

 hose. In such suits, 

 men go under the water 

 to examine and repair 

 ships, recover wrecks, sunken treasures, etc. 



1 3. The diving-bell is another means by which 

 men descend and work in the water. 



14. Its principle is seen in pressing any vessel like a 

 tumbler into the water, with its mouth downward. 



15. The air confined in the tumbler keeps the water out 

 and displaces it, just as a block or a stone would do. 



1 6. Fresh air is pumped into the diving-bell as shewn 

 above. 



A Man in a Diver's Suit or 

 Armor building a Founda- 

 tion under Water. 



