WITH NOTES. 533 



ignorant of steam, and some mode of applying its pro 

 perty of condensation, 



James Rollock,* in his doggerel verses, attempts some 

 description of this principle as applied to raising water, 

 when he says : 



&quot; Here little David curbs the Giant s brood, 

 Small drop* of Rain contend nifh Xoa^sjlood ; 

 One -weighs a thousand coming down apace, 

 Weighs but himself when he hath ran his race. 



The Heavens admire, the Centre stands amaz d, 

 To see such Streams by go small Forces raisVL 

 Great is the Work, but greater Is die Fame 

 Of that great Peer who did invent the same.** 



The plain English of Bollock s feeble lines is, that a 

 stream of water falling like &quot; small drops of rain,&quot; on 

 the steam cylinder, caused the elevation of a hundred 

 or more gallons, which he likens to u Xoah s flood,&quot; in 

 illustration of the greatness of the result ; while the 

 steam &quot; weighs but itself, being condensed. &quot; Here 

 little David,&quot; is no more than the single attendant on 

 the &quot; Giant s brood,&quot; the Water-commanding Engine. 



The distribution of the three articles, Xos. 25, 27, and 

 99, is evidently adopted to conceal their connection ; as 

 we have already seen in the instance of Xos. 22, 23, 

 and 58, which, although related to each other, are yet 

 separated, as though they were quite independent. 



100. 



Upon fo potent a help as thefe 

 two laft mentioned Inventions a 



Waterwork is by many years ex- 



j j j 



perience 1 and labour fo advantage- 



t-vpeueei for experience. 



See Appendix C. 



