SYLVA BOOK m 



APML 20* 1664. 



.-V ^ X ~ ' ~ * ~ 



akni two pieces of fir, each two foot 

 long, and i inch square, which were broken, the one 

 long-ways with 300 L weight, the other transverse- 

 ways with 2} hundred : Secondly, two pieces of die 

 same wood, each off of an inch square, and two foot 

 long, broken, the one long-ways with if hundred ; 

 the other transverse, with 100 L weight : Thirdly, 

 one piece of two foot long i inch square, broken 

 long-ways with 81 L Fourthly, one piece cut out of 

 a crooked oaken-billet, with an arching grain, about 

 f inch square, two foot long, broken with | hundred. 



JuieE 29. 1664. 



There weie *wtan^ several experiments more of 

 breaking wood : First, a piece of fir, J inch diameter 

 and 3 inches long, at which distance the weight 

 hung, brake in the plane of the grain horizon tally , 

 with 66| L whereof 15 L Tnj ; vertically, with 2 L 

 more. Also fir of inch diameter, and ij inch long, 

 brake vertically with 20 L and horizontally, with 19 L 

 Efan of \ inch diameter, and three inches long, 

 broke horizontally, with 47 L vertically with 23 L 

 Elm of \ inch diameter, and \\ inch long, broke 

 horizontally with 12 L vertically with 10 L which is 

 note-worthy. 



JULY 6. 1664. 



The experiment of breaking woods prosecuted: A 

 piece of oak of i inch diameter, and three inches long, 



