PHYSICAL TESTS OF EOAD-BUILDIK^G ROCK. 



99 





00 o o 



So 



m O 

 S w 



.go 



SI'S 



'6'^ 6 



CD ■« 



O ■* Cl o 



O :S Oj O 





§2S 



boM 



i^ t^ t^ t^ 



r- o t^o ot 





^i:^cccO"^or^o>050r*»o 



COdCOiC^OC^OOi-HGCOiO 



oo:ccor-0500ooC5^-iio 



OttoO— <CCC<002CqOO^'M 



O i-H 



^OOD(MOOOCC10GOOO»000^^ 

 '.C^ O :C CO »0 ^ CO O CC t^ CD oc 



3 C 





O 0+; m-5 



S.S-2.. . 



S ; ■ !§a oB ; : o g 



fiH:iffl 



_ooooooooooo 

 H '^ 'O '^ '^ 'C 'C "^ '^ '^ '^ '^ 



nQ« 



O C3 rl O/ o ^ '^ 



© +^ d o >■- c 



•^ o 



as 

 56 



OOOiOOOOOiOiCsOO 



lOGO^OOOO OOlQO^I-^ 





Tt^ lO O O 00 O lO CM .— I CO 



'(^ CO lo CO C'i rH c^ ci c-i !>i 



MiO-^OOiOOiMOO^T 



I CO 00 I>- (M Ci 



CO -^ 0*10 t^ r-^ o 1^ CO CO QO cc 



S'rf 



C3 O 







S O .'-.pC <^ 3 d , 



OOOOi'-tcOOlOOiCDOOOai 



cDcqtMO'-ir-i-H.-icoowo 



CCt^I^-CDiMOiOOOi-HCOOO 

 CO<:CiCDi>-(Mt^<NCO':C!!C'COI>» 



