Capvt IV.

to

ctätus. Et utile omnino uidetur prius exiguam eius-modi machinam componere, antequam ad magni etpretiosissimi operis constructionem accedas, ita enimfiet, ut fabris nonnullarum partium machinae Londi-nensis conformatio, quae mensuris solis uix definiripotest, distinctius ob oculos et ad imitandum proponiqueat.

14. Vt autem Lector ipsemet, de discrimine machi-nae primum a Saverio inuentae. et eiusdem recentio-ris fabricae, iudicare possit, inseram huc quae Harrißusin Lexico technico, sub titulo Engine , retulit.

Tab. v. The other Engine, is for raising Water by the for-tig. i.r.^Le ofFire, in which he (np.Savery) hath shewed, asgreat Ingenuity, Depth, and Thought, and true me-chanick Skill, as aver discovered it seif in any designof this nature, the description of this Engine is asfollows.

A. Denotes two Furnaces, whose Fire places areB, 1,2, and their Funnel or chimney C. in these twoFurnaces are placed two Vessels of Copper, which hecalls Boylers, the one a larger as L, the other a smal-ler as D. These Boylers have each a Gage Pipe asGahdN, of which G goes withiri eight Inches of the Bot-tom, but N reaches only half way down the greatBoyler,

By these Pipes, before the Engine can worck, youmust first fili the smali Boyler quite füll, and the greatBoyler two Thirds füll of water. Then light the Fireat Bi, and make the water in L boil, by which means

the