58 



Journal of Agricultural Research 



Vol. XIX. No. 2 



Table III. — Diameter, breaking strength, and tensile strength of scoured -wool fibers at 



five different humidities 



At relative humidity of 60 per cent 



Sample 

 No. 



A 

 B 

 C. 

 D 



Diam- 

 eter in 

 thou- 

 sandths 

 of a mm. 

 (average 

 of 100). 



11.84 

 12.75 

 16.44 

 16.55 

 18.37 



30.65 



Break- 

 ing 

 strength 

 (average 

 of loo). 



DgTK. 



44-89 

 44.91 

 72-85 

 71-74 

 81.02 



197.02 



Average. 



Dgm. 



44.90 



72.30 

 81.02 

 197.02 



Tensile strength 



per thousandth 



of a sq. mm. 



Average 

 of 100. 



Mgm. 

 407. 40 

 352-07 

 343-30 

 329-51 

 305.68 



266. 27 



Average 

 of 200. 



Mgm. 

 379-74 



336.41 

 305-68 

 266.27 



At relative humidity of 70 per cent. 



Diam- 

 eter in 

 thou- 

 sandths 

 of a mm. 

 (average 

 of 100). 



10.80 

 11.09 

 18.85 

 16.85 

 16.57 

 17.08 

 31.26 

 .30.35 



Break- 

 ing 

 strength 

 (average 

 of 100). 



Dgm. 

 41.09 

 39.53 

 85.86 

 74.08 

 74.62 

 79-23 

 199.67 

 193.31 



Average, 



Dgm. 

 40.31 



79-97 



76.93 



196. 49 



Tensile strength 



per thousandth 



of a sq. mm. 



Average 

 of 100. 



Mgm. 

 455-25 

 409.27 

 324.14 

 334.41 

 347- 76 

 345-78 

 260.07 



267. 20 



Average 

 of 200. 



Mgm. 

 432.26 



329-28 

 346-77 

 263. 64 



Sample No. 



At relative humidity of 80 per cent. 



Diameter 



in thou- 

 sandths 



of a mm. 



(average 

 of 100). 



Breaking 

 strength 

 (average 

 of 100). 



Average. 



Tensile strength 



per thousandth 



of a sq. mm. 



Average 

 of 100. 



Average 

 of 200. 



A 

 B 

 C. 

 D 



11.97 

 10.45 

 17. 26 

 18.64 

 13-62 

 14.65 

 30.02 

 28.69 



Dgm. 



45.41 

 40.48 

 73.79 

 86.08 

 51.46 

 56.10 

 183-75 

 175-83 



Dgm. 



42.95 



79-94 

 "53.78' 

 179.79 



Mgm. 



403.8s 

 471.98 

 315-37 

 314- 72 

 353-21 

 333-42 

 259- 60 

 272. 24 



Mgm. 

 437.92 



315-05 

 343-32 

 265.92 



The heavy line shows the average values obtained for all the results 

 secured at each humidity. The average breaking strengths of these 

 samples of scoured wool decrease as the humidity increases, while the 

 elasticity shows an increase with an increase in humidity. 



The wide variations in the values for tensile strength as compared with 

 similar values for breaking strength led the writer to compare the tensile 

 strengths of fibers of dififerent diameters in locks of wool A, B, and D. 



