94 ANNUAL OF SCIENTIFIC DISCOVERY. 



NORMANDY'S FRESH WATER CONDENSER. 



Ax apparatus lias been devised in France by M. Normandy, for 

 converting sea water into fresh, for use on ship-board. 



Briefly described, it is a series of discs, placed one above the other, 

 communicating by concentric galleries, and placed in a vapor bath at 

 a pressure a little above that of the atmosphere. " The sea water," 

 says the inventor, " circulating in the galleries heated by the surround- 

 ing vapor, gives off a certain quantity of vapor, which, mingling with 

 the atmospheric air, introduced by a tube from the outside, finally 

 condenses as perfectly aerated fresh water in a refrigerator, which is 

 also in communication with the atmosphere. No other means of agi- 

 tation or percolation is so efficacious or economical." The apparatus 

 which is free from the defect of depositing salt while distillation is 

 going on, is rather more than three feet in height, and eighteen inches 

 diameter. It will yield two pints of water per minute, at an expen- 

 diture of about 2 Ibs. of coal for each 45 Ibs. of water. 



MACIIIXE FOR PRINTING CALICO. 



A NEW calico machine has been invented by Dr. R. L. Hawes, of 

 Worcester, which will print twelve different colors at one operation. 

 In relation to this machine the Boston Transcript says : 



It was but quite recently within five years, we believe that it 

 was not thought practicable to print calico with the use of more than 

 six colors at one operation. If additional colors were required to 

 complete the design, they were given by hand blocks. Latterly, how- 

 ever, the English inventors have produced machines that will print 

 eight and ten colors, but it has remained for an American to outstrip 

 them all in this important branch of mechanic art. The principal 

 improvements introduced into this machine (for which application for 

 a patent has been made,) consists in the mode of applying pressure 

 to the print rollers, by which a yielding pressure of several tons may 

 be given to each roller with great ease ; also in the construction of 

 the frame work in a peculiar manner, so that either print roller may 

 be removed from the machine without disturbing the others. By means 



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of these improvements, this machine is made to operate with nearly 

 the same facility and ease as any six color machines hitherto con- 

 structed. The weight of the machine is eight or ten tons, standing 

 some nine or ten feet high, and necessarily has, not only great strength, 

 but a very nice adjustment of its parts to enable the operator to print 

 twelve colors on the cloth, so that each shall be exactly in its place, 

 and this, too, when cloth is passing through the machine at the rate of 

 a mile per hour. 



MANUFACTURE OF BEET ROOT SUGAR IN IRELAND. 



THE subject of cultivating the beet root, with a view to the manu- 

 facture of Sugar, is now engrossing a good deal of public attention. 



