542 THE CENTURY, 



severall peeces with, the top or upper part removeable 

 at pleasure, so as the lower part being made to stand 

 on feet, may serrve at pleasure for a possenet, skellet 

 or boylatory ; and when the top is put on, and when 

 fastened and luted, it may then serve for the ventible 

 to make the blast.&quot; 



In 1615, De Caus invented, or at all events published 

 an account of a small hot- water fountain; in 1617, 

 Robert Fludd published his voluminous work, &quot; Historia 

 Macrosmi,&quot; containing descriptive and engraved illustra 

 tions of the effects produced on water heated in close 

 flask-shaped vessels. 



In 1629, Branca suggested the rotating of a wheel, 

 acted on by a jet of steam, as a simple kind of stamping 

 or pounding mill. But the author, who seems to have 

 taken a more practical and enlightened view of the 

 subject, and to have considerably contributed to the 

 Marquis s enthusiasm, was John Bate, who, in 1634 

 and 1635, published editions of his &quot; Mysteries of 

 Nature and Art.&quot; His treatise, u The first Booke of 

 Water-workes,&quot; contains, as stated at the commence 

 ment, u Experiments of drawing water by the crane 

 (syphon), and by engines ; of forcing water by ay re 

 compressed, and by engines ; of producing sounds by 

 ayre and water; by evaporation of water by fire, and by 

 engines ; of motions ~by evaporating water, and by rarify- 

 ing ayre.&quot; 



Among his &quot; Experiments of producing sounds by 

 evaporation of water byayer,&quot; the following is given : 



u Prepare a round vessell of 

 brasse, or lattin, having a 

 crooked pipe or necke, where- 

 unto fasten a pipe : put this 

 vessell upon a trevet over the 

 fire, and it will make a shrill 

 whistling noyse.&quot;- Page 27. 



