piv--ivo .-i res* in :;r.71 Ib. per -i|iiaiv inch, the corrcHpoliding 



IIIUIII ' 1 1.'! 111. |icr MjU.LIC ilicll. A.HSIIUling tllO 



ii-u.il l:i\v in liulil good lor the whole ol tin' depth, tlir maximum .kin 



-IIVSS pel' .-<|lialV ilH'll Would lir ;i77l Ib.S. 



Thr eo-cllicieiit nl'elasti' i rmincd from an increment in 



ili flection <>i .i;:;r>-in. between the lo*da of 2500 UML and 14,50'' 



>.ti!>0 ll.s. 



Table K show* llli' several fcadlli 



Tin- weight (if the beam 01; \o\emher 2!llh was 430 Ibs., ur 2*.71 

 lli.-. per cubic loot, and on December !t|h, thu date of test, the 

 ;i- 115 lli-. li], on., of L't'i.OS Ibs. per ciiluc f.iot, .showing a li. 

 weight at tin 1 vale nl .'Jli.'i II'. |IIT culi e ti'ot per i|:iy. 



I '.cam I. Ill :i> It-stcil I leccml icr I'tli. !>!'.';. with the annular rinir.- 

 U in Fig. in.".. 



The beam was a poor sp.viiiieii. hein^ full of knots and season 

 cracks, and purtiv decayed. The ^lai,, O u thu top was parallel, while 

 on the sides it was somewhat oblique. 



The load upon the brain was ^raiiually increi-c'l until it auiounieil 

 to 18,600 Ibs.. wh'n it failed by the tearing apart of the fibres on 

 the tension side. 



The maximum skin -Ires.-, due to ibis brcakin- IOM! i> L'HI5 Ibs. per 

 square inch. 



The oo-efficicnt of elasticity , as detm mined by an increment in the 

 deflection of .55-in. between the. loads nf 1500 Ibs. and 10,000 Ibs., is 

 650,930 Ibs. 



Table Jt shows the several reading-. 



The weight of the beam was 450 Ibs. 12 oy.s , or 29.02 Ibs. per t-.:bie 

 foot on Nov. ! ! th, and 4.'!S lb>. I.'! o/s , or 28. 25 Ibs. ]'er cubic b)'" 00 

 l>ec. 8th, showing a loss of weight ai ihe rate of .(IS55 Ib. per cubic 

 foot per day. 



The time occupied by the lest \va> 20 miniiie- 



The following Table gives the summary of the results obtained for 

 White Pin; : 



NKW TIMKI-.I!. 



Ol.U TlMBKH. 



Ilcnce, for the new timber. 



The average weight in Ibs. per cubic foot = 37.88. 



co-efficient of elasticity in los. per sq. in. = 754,265. 

 " maximum skiu stress " =3388. 



The following data are suggested for practice : 



31 



