166 THr. Vre on Indigo. 



lyses, lately executed by myself, will sufficiently demonstrate* 

 The quantity of indigo required for the assay need never ex- 

 ceed ten grains, provided a very delicate assay-balance be em- 

 ployed ; and by a suitable system of arrangements, the average 

 quality of 500 chests may be accurately determined in the 

 course of a day, by a diligent chemist, with four or six ordi- 

 nary assistants to follow his directions. 



l.—rEast India Indigoes ; prices asi at tjie If^st October 

 Sales :-^ 



Broken, middling violet, and qoppery violet 



spotted. 

 Ditto, a little being coppery violet and copper. 

 Ditto, middling red violet, dull violet and lean. 

 Large broken and square, even, middling red 



violet. 



5. 4 ^ 75.0 Much broken and very small, very crumbly 



and limy, soft, good violet, 



6. 4 9 60.0 Square and large broken, i middling violet, 



and I good coppery violet. 

 f. 6 3 70.0 Large broken, very good ; paste, a little limy, 



good violet. 

 §« 6 6 60.0 Square and large broken, soft, fine paste, fine 



violet, 

 9. 6 66f Square, ditto, good red violet. 



10. 7 75 Square, ditto, fine purple and blue, 



11. a 3 37.5 Middling ordinary Madras. 



12. 3 6 60.0 Good Madras. 

 J3. 4 3 58.0 Very fine ditto. 

 14. 2 p — Low, pale, Oude. 



1§. 2 4 27| Middling ordinary Oude. 



18. 3 3 54 Good Oude. 



17. 19 29 Lundy, very low quality. 



11,-— American Indigoes, ^^WhoHesole prices at present. 



*. d. s. d. 



Caraca Flor. . 6 54^ Guatimala.^'No. 5. 5 50 



Guatimala, — No. 1.5 33^ „ 6. 5 3 35 



2. 3 2 19 „ 7. 4 8 46 



„ 3. 4 6 32^ „ 8. 4 8 33^ 



„ 4. 5 4 50 „ 9. 5 4 50 



