WITH NOTES, 405 



\_An unsiiikable Ship.~\ As early as 1583, appeared 

 &quot; A Note of sundry sorts of Engines,&quot; without the 

 author s name. The 20th and last of these is : u To 

 preserve a boat from drowning and the people that be 

 therein/ See J. O. Halliwell s Eara Mathematica. 



Considering the state of ship-building in 1655, 

 the foregoing plan must have been some very primitive 

 scheme ; but, rendering vessels unsinkable, has long 

 been a favourite subject with inventors. 



How to make fuch false Decks 

 as in a moment fhould kill and take 

 prifoners as many as fhould board 

 the Ship, without blowing the 6 

 Decks up, or deftroying them from 

 being reducible, and in a quarrer 7 of 

 an hours time fhould recover their 

 former fhape, and be made fit for 

 any imployment without discover 

 ing the fecret. 



the real. P. 7 read quarter. 



[False destroying DecJcs.~\ William Bourne, in his 

 &quot; Inventions of Devices,&quot; 1578, devotes the u Third 

 device&quot; to show u How to use a plain or open deck 

 hatches, that it is not possible to enter the ship without 

 spoiling of the enemies.&quot; 



14. 



How to bring a force to weigh 

 up an Anchor, or to do any forcible 

 exploit in the narroweft or 8 loweft 



8 and for, or. 



