30 



BULLETIN 676, U. S. DEPARTMENT OF AGRICULTTTRE. 



a 



Eh 



ait\[iBj JO ODBjing 



■m -bs 

 lad -sqq: 



•J'Blp'BI 



gjnncj JO SDBjjns 



•m -bs 

 J9d -sq^ 





»jnii'Ej JO aDTSjmg 



•sqq; 



"ICTpBI 



ainiTBj jb aaBjjng 



•sqT 



i 



•Ii3T;u93nt3; 

 gjnnBj JO aoBjjng 



•ni -bs 

 jad -sqi 



•IBTpBI 



ajnijEj jb eaejing 



•m-bs 

 lad' -sqi 



Hardness: 

 load required 



to embed a 

 0.444-inch bal 1 



one-half its 

 diameter. 



■aoBjjns iBi^oaSiiEi 



•sqq 



•ao^jjns ibjp'B'h; 



•sqT 



•aaejins pua 



•sqi 



•jrniTi OT;sB[a jb ssqi%s Jaqg 

 'uiBiS 6% JBinDTpuadjad noTssajdnioo 



■m -bs 

 i9d -sqTC 





•Xjioi;sB|ajo snpipopi 



•ni -bs aad 

 •sqijosooo'l 



■q^§naji,s 

 Smqsnja mmnpcBH 



•nt-bs 

 J9d "sqq: 



'train 



•m-bs 

 jad 'sqq: 



ii 



•ll 



-^ 



a?* 



•amiTBj ejaidnioo Sny 

 -snBo'dojp JO :>ti§T8H 



•saqoni 



•;tuiti otjsBje o^ 3[J0jW 



•in -no lad 

 •sqi qoni 



•if-HOT^^SBia JO sriprpoH 



■m -bs lad 

 •sqijosooo'l 



•:jTtuit 



■tn-bs 

 J9d 'sqi 



60 



a 



!3 



"S 

 w 



•3[iOja tb:joi 



•m -no jad 

 •sqi qoni 



•p^oi 

 nmraixBra o:; ^fio^v 



■m -no lad 

 ■sqi qoni 



•;TTnn ot:}sb[9 oj 31J0j^\. 



■uT -no i8d 

 •sqi q»ui 



•1|1ot;sbi9jo STipipopf 



■m -bs isd 

 •sqijosooo'l 



•9m:fdTU JO snpipoH 



•m-bs 

 jad'sqT; 



Dt^SBi© ^B ssans laqu 



•UT -bs 



jad "sqi; 



Sad 

 o S o 



ago 



•IBT^naSuBx 



CB O S 

 CD S 



•lOTpBH 



■aranioA ui 



•fjua:}noo em^siopj 



•ijnaa ja<j 



•^sai JO 9Uii% }t? stnniOA 

 no paseq 'jtip-naAO '.^;tABj3 agioedg 





•jaqtann eonaiejeii 







8 



1 

 1 





o 



fig 



&S 



°J 

 AO 



Wh 



CD 

 o 

 <J 



o 



fin 

 O 



Ph 



tn 



o 



< 



o 

 w 

 & 



> 



;= 







-J, ^ 



,_^ 







0<D<3 





o 



CO 





t^iO w 







OJ 













O^^ CD 





oir-. 





oo 





LO :0 CO 









CO CO t~ 

















t^ 























i-<CO 









S 





>Ot^ j-l 





coo 

























^-1 lO 





00 ir 





















S 





-«■<>) n 





loa 













l-Hrt 









(M 





lOOO CD 

























?s 









COC 













"""T 













OOJ rt 







IM 













rt rt 









O 





0" 



^ 





C^ C7 















"^ 



'^ 









cn 

























*-(I-l 



00 





■oo o 





tPO 















iMrH tH 







t^ 



























CO 





t^cD K5 





-^cn 





c^ o> CO 





(NO) 















o 























t-H ^ r-i 





'^ 





"^p 





OlO O 





TfCt; 





















n 





















Tl CO jH 









cq 





■!i<oq IN 





Tf <M 















































^ rt 









o 





cjcD n 





iCt>- 







































WC 







rt rt rt 













OOO CT. 





U5 0i 



































00 





t^ 





o 



1-( 













00 



t^ 





(N 





to 





02 



■* 













^ 



t^ 

































- 











CO 









- 























(N 





CO 















, 





^ 





, 











-3 



a 





n 





i^ 































o 

 o 



g. 









u 









- 



i 



2; 



■a 



C3 ■ E 





(A® 

 •52 



xg 



13 







2S.^ 





go-5 





O 

 o 



cs tj" i^ 



>2 





p^ 





1^ 





(=H 









