192 



Memoranda on Explosive Cotton, 



[Feb. 





8£ a. m. 



n 



101.10 Therm. 



73°. 





10|a. m. 



>- 



100.50 





11 a. m. 



t> 



100.40 Therm. 80°. 





12 



)i 



100.30 





2 p. in. 



>> 



100.30 





IP.2. 



n 



100.34 





5 p. m. 



}■> 



100.30 





6 p. m. 



}- 



100.24 



1st March, 1847.. 



7 a. m. 



>' 



100.70 Partial clouds. W. S. W. 

 Therm. 73°. 





ip. 8. 



„ 



100.60 Ditto ditto. 





4 p. m. 



)S 



100.00 Ditto N. E. Therm. 84°. 





6 p. m. 



„ 



100.20 Ditto ditto. Therm. 84°. 



2d, 



£ p. 8 a.m. 



>■> 



99.80 Bright. N. E. strong 

 breeze. Therm. 74°. 





11 a. m. 



>) 



99.40 





5 p. m. 



t> 



99.56 Ditto. Therm. 84°. 





6 p. m. 



»J 



99.70 



3d, no observation. 









4th, 



6 p. m. 



W 



99.50 W. N. 



E. Therm. 84°. 

 )f Gun Cotton, mixed 



Estimate showing the actual cost oi 



manufacturing 3 lbs. ( 



quality. Acids at Calcutta prices. — 







Description of Articles. 



Quantity. 



Cost. 



Total cost in Co.'sRs. 



Nitric Acid, 



Sulphuric ditto, .... 

 Banda Cotton, 



Tolas 651 = 17| 

 Ditto 840 = 21 

 Ditto 100 = 3 11 



bs. 



bs. 



JS. 





@12 as. per lb. 

 @ 2 as. per lb. 

 @16Rs.per md. 



Rs. A. P. 



13 2 9 



2 12 3 



8 





Total, 16 7 



Equal to 5rs. 7ans. 8 p. per lb. mixed, = to 10. 15. 4 for 1 lb. of the best kind. 



An estimate to manufacture If lb. of best Gun Cotton, assuming that the cost 

 of Nitric Acid ought only to be 3 as. per lb. and that \ of the Acid can be reco- 

 vered by re-distillation, after use. The Sulphuric Acid not to be charged, as nearly 

 the whole of it is recovered hy reconcentration. 



Description of Articles. 



Quantity. 



Cost. 



Total cost in Co. 's Rs. 



Nitric Acid,.. ...... 



Sulphuric ditto, .... 



Banda Cotton, ...... 



Tolas 65 l = 17ilbs. 

 Ditto 840 = 21 lbs. 

 Ditto 100 = 3 lbs. 



@3 as. per lb. 

 @ Nil 

 @16Rs. permd. 



Rs. A. P. 

 3 4 9 



Nil. 

 8 





Total 3 12 9 



Equal to 2 rs. 9 ans. 6 p. per lb. 



