OBSERVATIONS UPON COTTON. 



417 



Breaking- weight of 19 hairs of Maranham cotton. 

 December i860. Price Sfc?. per lb. 



Distance between points of suspension, from 0*25 to 0*4 in. 



No. 



grs. 



No. 



grs. 



No. 



grs. 



No- 



grs. 



14 . 



• 36-9 



17 • 



•• 74'4 



II . 



• 103*6 



8 . 



. 141*1 



9 - 



• 54'2 



19 . 



.. 787 



15 • 



. io8*4 



7 • 



• ^51"^ 



5 • 



. 70*0 



2 . 



. 8r6 



6 . 



. 112*3 



13 • 



■ 156-9 



lO . 



. yi'o 



3 • 



. 9 1 '6 



I . 



. 122*4 



18 . 



. 187-2 



16 . 



• 71*5 



12 . 



• 93*6 



4 • 



. I22'4 







Mean breaking- weight = 107*1 grs. 



This sample of Maranham seems greatly inferior in 

 strength to another sample recorded later on. Upon re- 

 ferring to the note-book J I find these hairs were suspended 

 with considerable intervals between the supports, while in 

 the other sample the interval was kept as near as possible 

 to 0*1 inch. 



Breaking-weights of 2 1 hairs of " fair Egyptian 

 March 28, 1863. Price 226?. per lb. 



cotton. 



Distance between points of suspension o* i inch. 



No. 



grs. No. grs. 



■ No. 



grs. 



6 .. 



. 52*8 21 ... 96'o 



7 •• 



. 129-6 



II .. 



. 55'6 14 ... 106*0 



16 .. 



. 132-0 



19 . 



. 55*6 I ... 107-5 



10 .. 



• 135*3 



18 . 



.. 60*4 15 ... io8*o 



13 . 



. 141-6 



9 • 



.. 75-3 2\.. 120-4 



5 • 



.. 1440 



12 . 



. 93*6 3 ... 128*6 



8 . 



. 156-9 



17 . 



. 83*0 20 ... 129*1 



4 • 



• 157-9 





Mean breaking- weight =108 



grs. 





Although the maximum strength is low in this sample 

 compared with some of the preceding samples, the general 

 average is brought up by a good number of medium and 

 strong hairs. 



