Mr. L. Alexaaders's Submarine Vessel. 





This novel vessel was presented at our last Fair by tlie inventor, 

 Mr. L. Alexander, and made two successful descents to tlie bot- 

 tom of the river opposite Castle Garden, in presence of a large 

 number of persons who had assembled for the purpose of witness- 

 ing the operation. Her last descent was made on the 28th day of 

 October ; she disappeared from the surface of the water at half 

 past one o'clock with seven persons on board, and descended to 

 the bottom in 35 feet of water. At the bottom the hatchway was 

 opened, and continued open for one hour and ten minutes. During 

 the time a small rock was broken, the pieces of which were brought 

 to the surface. At the expiration of the time stated, the vessel 

 ascended to the surface and the company landed, dry, and well 

 pleased with the experiment. They testified that tlie vessel gave 

 proof of capacity to make explorations in much greater depths of 

 water. The cut is a very good representation of the vessel, show- 

 ing a part of the interior. 



Description of the Vessel. 



The invention of the submarine Vessel is the application, upon 

 a large scale, of the physical law to which the illustrious Marri- 

 otte has given his name, and which is invaiiable in its effects. 

 This law is, that a certain quantity of air inclosed in a given 

 space, will overcome the force with which a column of water 

 Strives to enter the reservoir, and compel the water to confine 

 itself to such limits as are desired, according to the degree of 

 condensation to which the air is subjected. 



