NORTHERN SUGAR INDUSTRY. 

 Table III. — Analyses of semi-sirups from Amher cane. 



49 



Date. 



a, rj a 

 o o o 



September 13 . 

 September 13. 

 September 15 

 September 15. 

 September 18. 

 September 18 

 September 19. 

 September 24. 

 Scptem-ber 26. 

 September 26 

 September 26 

 September 27. 

 September 27. 

 September 27. 

 September 28 

 September 28 

 September 29. 



October 1 



October 1 



October 2 



Octobers 



October 5. 



October 15 



October 15 



Average 



1. 2974 

 1.2618 

 1. 2995 

 1.2294 

 1.2780 

 ].2538 

 1.8022 

 1.2219 

 1.3081 , 

 1.1922 

 1.2849 [ 

 1. 22G3 ; 

 1. 2954 i 

 1.2687 i 

 1.2382 I 

 1.2886 i 

 1.2744 i 

 1.1992 I 

 1.2302 i 

 1. 2282 

 1. 2701 

 1. 2676 

 1.20.35 

 1. 2237 



1. 2559 



60. 13 



54. 00 

 60. 07 

 47. 77 



55. 70 

 53. 09 



59. 35 



53. 48 



60. 87 

 40. 84 

 57. 14 

 47. 24 

 59. 37 



54. 62 

 49. 02 



56. 75 



54. 39 

 41.72 

 47.18 

 46. 97 



55. 37 

 54. 19 

 43. 13 

 46. 62 



52. 478 



48. 43 

 47. 37 



54. 48 

 42. 56 

 =53. 01 

 45. 84 



55. 67 

 45. 50 

 50. 28 

 36. 47 



49. 86 

 41. 09 

 50.01 



47. 57 

 45. 20 



50. 80 

 50. 23 

 38. 01 

 41. 07 

 41.23 



48. 33 



49. 81 

 36. 95 

 40. 20 



50 



35. 

 33.0 

 40.0 

 31.8 

 32.9 



4L4' 

 15.7 

 36.0 

 26.3 

 35.5 

 30.7 

 37.0 

 36.3 



"32."6" 



27.5 

 14.0 

 13. 1 

 19.4 

 32. 

 35. 9 

 26.0 

 24.1 



29. 83 



r 



33.14 



31. .^3 

 38.68 

 30.04 i 



32. 04 I 

 31.78 ! 

 40.53 

 19.73 

 35.54 

 25.60 

 34.11 i 

 28.29 : 

 35.70 ^ 

 34.80 j 

 33.49 

 32.53 

 29.63 

 16.41 i 

 17. 66 

 22. 13 j 

 32.40 

 35.64 

 26.11 ! 

 24.79 



15. 29 



I. 5. 84 

 15. 80 

 12. 52 

 20. 97 

 14.06 

 15. 14 

 25. 77 

 20. 74 

 10. 87 

 15. 75 

 12. 80 



14. 31 

 12. 77 



II. 71 

 18. 27 

 20. 60 

 21.60 

 23.41 

 19. 10 



15. 93 

 14. 17 

 10. 84 

 15. 41 



55.1 

 56.5 

 64.4 

 62.9 

 57.5 

 59. 9 

 68.3 

 36. 9 

 58.4 

 62.7 

 59.7 

 59.7 

 60.1 

 63.7 

 68.1 

 59.0 

 54.5 

 39.3 

 37.4 

 47.2 

 58.5 

 65.8 



53.2 



1. 7700 

 1. 2217 

 ]. 3183 

 1. 9540 



1. 7300 



2. 3643 

 1. 6066 

 1. 7260 



30. 08 I 16. 28 i 57. 1 1. 7680 



CONCLUSIONS FROM TABLE 1. 



The best Amber juice of the season was obtained September 19, 

 analysis '^o. 30. 



The substances in solution in this juice, aside from the sugars, were 

 only .44 per cent. 



No. 107 might have proved a better juice, but the data for computa- 

 tion are not complete. 



Direct polarization gave a mean result (viz, 8.72 per cent.) somewhat 

 higher than that of double polarization (viz, 8.38). This shows that 

 there was present in the juice dextrogyratory matter not sugar (viz, 

 soluble starch, gum, &c.) more than enough to counteract the lievo- 

 rotatory power of the invert sugar present. 



The error which may arise trom relying on a single polarization is 

 illustrated by sucli analyses as Nos. 18, 23, 42, &c., in which the first 

 polarization gives results too high; and in Nos. 67, 73, 76, 78, 80, &c., 

 in which the results are too low. 



In cane, ripe and lately harvested, the results of single polarization 

 are quite reliable. In injured or long -harvested canes they are too low. 

 In canes containing large quantities of starch and gum they are too 

 high. 



CONCLUSIONS FROM TABLE II. 



As is to be expected the effect of defecation on the juices is to in- 

 crease the percentage of ash, this being in Table I, .5685, and in II, .579. 

 16435 N s 4 



