2G4 LIFE, TIMES, AND SCIENTIFIC LABOURS f 1664. 



which happen every 24 hours, effected by a pendulum 

 clock. A thermometer ; a compass ; a self-registering 

 weather-cock a means by which Mr. Willis causes a 

 piece of iron by exposure to moderate heat to calcine, 

 without the help of a corrosive, and dissolve on being 

 plunged into water; of a deaf and dumb person at 

 Oxford, who Mr. Willis has taught to read by showing 

 the different inflexions of the voice necessary for articu 

 lation ; a new manner of exploding ships in the water ; 

 a way by which several short beams can be made into 

 a plain flat surface, by placing them one on the top of 

 another without being supported, nailed, or grooved 

 one into another ; of a furnace or stove by Dr. Kuffler, 

 in the style of Drebble s, which I saw some time ago 

 at La Hague, and which was so successful at Arnheim, 

 with self-acting registers ; another kind of furnace which, 

 for five sous worth of wood, cooked a large quantity of 

 bread ; a way of distilling salt-water to make it drink 

 able, where for five sous you can distil water enough 

 for 100 persons to drink*, an instrument to design and 

 draw every description of object by a person who has 

 never learnt.&quot; 



He adds : &quot; One of the most curious things I wished 

 to see was a Hydraulic Machine, which the Marquis of 

 Worcester has invented, and of which he has made an 

 experiment. I went expressly to Vauxhall, the other 

 side of the Thames, a little below Lambeth, which is 

 the Palace of the Archbishop of Canterbury, in sight of 

 j London. This machine will raise to the height of 40 

 feet by the strength of one man, and in the space of one 

 minute of time, four large buckets of water, and that 

 by a pipe or tube of 8 inches. But what will be the 

 most powerful help to the wants of the public is the 

 work which is performed by another ingeniously con 

 structed machine, which can be seen raised on a wooden 



