12 



BULLETIN 676, U. S. DEPAETMENT OF AGEICULTUBE. 



1 



a 



•IBTJUaStTBIJ 



9jnnBj JO eocjjng 



'u] 'bs 

 J9d'-sqT; 



•JBTpBI 



9.mnBj JO GOBjjng 



•m -bs 

 jod 'sqq; 



6 



1 



o 



•I13i;u9Sub; 

 9jnpi3j JO ooBj.mg 



■sqi 



'I^TpBi 

 ejnn^j JO ooBjjng 



■sqa 



CO 



emxTCj JO 90Bjjng 



•nt -bs 

 .i9d 'sqq; 



•pjipBi 

 9.mncj jb ooBjjug 



•ni -bs 

 jgd'-sqi 



Hardness: 

 Load required 



to embed a 

 0.444-inch ball 



one-half its 



diameter. 



•9oejjTis jBT^uaSnej, 



•sqa: 



•90Bj,ms l^TpBH 



•sqq; 



•90'Bjjns pug 



•sqi: 



'nreiS o; Jtiinoypusdaad noTssaJdmoo 



TiT-bs 

 J9d''sqq 



go 



iia 



Oft 



•X^TOi^SBp JO sninpoH 



■in -bs J9d 

 •sqfjo sooo'T 



•q(j§u9Jjs 

 girpqsTijo ranrarxBH 



•m 'bs 

 J9d 'aqq: 





•ui "bs 

 J9d *sqq; 



Impact bending, 

 50-pound hammer. 



•9iniTCJ 9i9idnioo §ni 

 -snBO dojp JO m§l9H 



•S9qoni 



•:jraiTi oi:jgBi9 o:j 3[j0ji^ 



•m -BO J9d 

 •sell Tioni 



•i:(pnsBi9jo snppoH 



•m 'bs aed 

 •sqijo sooo'T 



otjsBp vs ss9.i;s jsqijl 



•m-bs 

 J9d -sqq: 



ci 



to 



m 



•iliojA ii3;ox 



•m -no .i9d 

 •sqi qoui 



•pisoi 

 ramnrs'sra o:j X^o^V 



•iiT -no jod 

 •sqi qoni 



•JTrall 0WST!I9 0% 3IT0^\i 



•m -no J9d 

 •sqi qoni 



•/;iot:jsi3I9 jo snpipopt 



•m 'bs J9d 

 ■sqfjo SOOO'T 



•9m:jdni jo sninpoH 



•m -bs 

 J9d 'sqi 





■m -bs 

 j9d'"sqT; 



Baa 



III 



•lt;T:jn9§nt!X 



.i 1=1 



fi c § 



^a 



•FlpBy; 



•9nrni0A nj 



•jna^noo exni^sTOj^ 



•;u9o J9<j 



•?sai JO aratj ^b aranicA 

 no pasBq 'Yi.ip-u9A0 '^;iat;j3 ogioadg 





-jaqmnn aouaaajaa; 







"3 



8 



•a 

 a 



1 



A 



ax 





ft 



<! 

 12; 



o 



O 



CO 



1-1 



OS 



W.O 

 o 



H 

 H 



o 



CO 



•sO00S2=J. 



•5O00'fZ=X 





•tO0S6T=X 



"i 00T2=i 



CO 

 C<1 



•zD008T=O 



■sO 0O8T=O 



S5 



•sO0Z0T=O 



•sD00TT=O 





"lOA osie=g 



> o/*s OOW=S 





'lOA ossz=s 



•iO/s 0898 =S 



<N 



VOA 00g8=H 



•sO/^ 0088=2 



CM 



■g_0A 0Og8=H 



•eO/V 0098 =H 



(M 

 CS 



•6_0A 00i£=H 



VD/V 008^ =H 



(M 



•6_07V 0063=5 



•6 0/V 002S=i[ 



O 



•i O 0983=a 



•TOOoes=a 



o> 



•i 0069=0 



•lO oooz;t=o 



oc 



•cQ^ 0'89=5 



•iO/V000TT=i 



t; •zO0tT=H 



•sOTTT=H 



o 



•5O X"?T=AV 



•i ez=M 



>o 



•iO0008=a 



•iooss8=a. 



Tt< 



•5O/V00S8Z=d[ 



•ioA.oooe8=d: 



CO 



■iO0-98T=Ai 



•sO0-8fT=M 



CVI 



"zO Z"2t=Ai 



•5O 6'88=.\i 



- 



•s Te-s=Ai 



^z•oo^&=^^ 



o 



■i oosz=a 



•i0 0oos=a 



OJ 



•s_OA 0058T=H 



■ioy\ ooe9z=H 



cc 



•5_D/\,0080T=5 



■LOA0006T=i[ 



r- 





•:O0'iT=g 





(O 





•1 5-6=S 





>o 





•i0 82=S 





•* 











CO 











N 











- 



g 



s 

 



^. 





 



1 



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