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The chemical news
- Bandzählung
- 2.1860
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- 1860
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- Universitätsbibliothek Chemnitz
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- Universitätsbibliothek Chemnitz
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The chemical news
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Band
Band 2.1860
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- Titelblatt Titelblatt -
- Ausgabe No. 27. — June 9, 1860 1
- Ausgabe No. 28. — June 16, 1860 13
- Ausgabe No. 29. — June 23, 1860 17
- Ausgabe No. 30. — June 30, 1860 25
- Ausgabe No. 31. — July 7, 1860 37
- Ausgabe No. 32. — July 14, 1860 49
- Ausgabe No. 33. — July 21, 1860 61
- Ausgabe No. 34. — July 28, 1860 73
- Ausgabe No. 35. — August 4, 1860 85
- Ausgabe No. 36. — August 11, 1860 97
- Ausgabe No. 37. — August 18, 1860 109
- Ausgabe No. 38. — August 25, 1860 121
- Ausgabe No. 39. — September 1, 1860 133
- Ausgabe No. 40. — September 8, 1860 145
- Ausgabe No. 41. — September 15, 1860 157
- Ausgabe No. 42. — September 22, 1860 169
- Ausgabe No. 43. — September 29, 1860 181
- Ausgabe No. 44. — October 6, 1860 193
- Ausgabe No. 45. — October 13, 1860 205
- Ausgabe No. 46. — October 20, 1860 217
- Ausgabe No. 47. — October 27, 1860 229
- Ausgabe No. 48. — November 3, 1860 241
- Ausgabe No. 49. — November 10, 1860 253
- Ausgabe No. 50. — November 17, 1860 265
- Ausgabe No. 51. — November 24, 1860 277
- Ausgabe No. 52. — December 1, 1860 289
- Ausgabe No. 53. — December 8, 1860 301
- Ausgabe No. 54. — December 15, 1860 313
- Ausgabe No. 55. — December 22, 1860 325
- Ausgabe No. 56. — December 29, 1860 337
- Register Index 342
- Beilage No. 28. June 16, 1860 I
- Beilage No. 29. June 23, 1860 I
- Beilage No. 30. June 30, 1860 I
- Beilage No. 31. July 7, 1860 I
- Beilage No. 32. July 14, 1860 I
- Beilage No. 33. July 21, 1860 I
- Beilage No. 34. July 28, 1860 I
- Beilage No. 35. August 4, 1860 I
- Beilage No. 36. August 11, 1860 I
- Beilage No. 37. August 18, 1860 I
- Beilage No. 38. August 25, 1860 I
- Beilage No. 39. September 1, 1860 I
- Beilage No. 40. September 8, 1860 I
- Beilage No. 41. September 15, 1860 I
- Beilage No. 42. September 22, 1860 I
- Beilage No. 43. September 29, 1860 I
- Beilage No. 44. October 6, 1860 I
- Beilage No. 45. October 13, 1860 I
- Beilage No. 46. October 20, 1860 I
- Beilage No. 47. October 27, 1860 I
- Beilage No. 48. November 3, 1860 I
- Beilage No. 49. November 10, 1860 I
- Beilage No. 50. November 17, 1860 I
- Beilage No. 51. November 24, 1860 I
- Beilage No. 52. December 1, 1860 I
- Beilage No. 53. December 8, 1860 I
- Beilage No. 54. December 15, 1860 I
- Beilage No. 55. December 22, 1860 I
- Beilage No. 56. December 29, 1860 I
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Band 2.1860
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THE CHEMICAL NEWS. Vol. II. No. 44. — October 6, i860. THE ADULTERATION BILL IN THE CITY. We are happy to he able to announce that the City Com missioners of Sewers have unanimously resolved to adopt the Act for preventing the Adulteration of Food and Drink. The resolution does them great credit, hut the refusal would have been a greater disgrace. It is an extraordinary circumstance in legislation, and an example which we hope will never be followed, that an Act of Parliament for the prevention of fraud should he only permissive. What, we may ask, is the moral difference between the negotiation of a forged bill of exchange and the sale of a worthless for, and at tire price of, a valuable article ? And in what does the certain and serious injury to the body, which may result from the ingestion of a poisonous substance, differ from that which may be occasioned by a common assault ? And what would be thought of an Act of Parliament which made the punishment or pre vention of assault and forgery dependent on the will of a local board ? It may be answered, that such an act would be sure to be adopted. But how, if the adoption depended on the will of many who might possibly profit by the non-adoption ? It may bo thought invidious to continue this lino of argument, and we willingly quit it for the more pleasant task of congratulating the public and profession on the resolution adopted. The object of the Act is not so much punishment as prevention, and this happily it is very easy to accomplish. The adulterator will now bo in constant fear of detection and exposure, which, in the absence of a higher moral feeling, will probably deter him from continuing his nefarious practice. If not, it will be the fault of the public if the Act be not put in force against him; and beyond this it must be remem bered that the common law still affords compensation for injury and fraud sustained in consequence of adul teration, but unfortunately very inadequate, because expensive and troublesome to obtain, and moreover un certain. We cannot conclude without a remark on the analyst selected. In this instance no better appointment could have been made than that of the medical officer to the City. Few chemists have had so much practice in the detection of adulterations as Dr. Letiieby. He took a leading part in the analytical sanitary commission of the Lancet, whose discoveries led directly to the passing of the Act, and he is properly rewarded by an appointment under the Act. It has been generally supposed, how ever, that most of the posts would be filled by the medi cal officers for the districts, but this we conceive would be a great mistake. Beyond three or four gentleman in the metropolitan districts, who are eminently qualified for the appointments, it is no disrespect to the majority, in the absence of further evidence to the contrary, to say that the posts would be much better filled by those who have devoted themselves exclusively to chemical pur suits. The simplest analysis is after all not an easy task to unpractised hands, and the detection of some adidterations requires no ordinary analytical skill. As to the salaries it ought to be at once understood that the highest fee receivable under the Act is a very insufficient remuneration for more than the most cur sory examination of a substance; and the amount of fees received would therefore be but a small reward for the labour and skill devoted in honestly carrying out the purposes of the Act. SCIENTIFIC AND ANALYTICAL CHEMISTRY. Notes on some of 1 the Chemical Reactions of Corrosive Sublimate, by T. G. Wokmxey, M.D. {Concluded from page 182.) XI. Copper Test.—This test consists in introducing into the corrosive sublimate solution a small slip of clean copper foil, which will cause a decomposition of the mer cury compound, with the deposition of metallic mercury upon the copper. The delicacy of the test is much im proved by acidulating the mercury solution with hydro chloric acid, and also by heating the acidulated solution. In the following experiments a grain measure of the mercury solution was placed in a watch glass, and acidified with hydrochloric acid; the slip of copper being intro duced into the solution, it was heated over a small flame of a spirit lamp. 1. T Joth, grain of corrosive sublimate will impart to the copper an immediate silvery lustre, which soon be comes grey, and then dark grey; this reaction takes placo equally well without the hydrochloric acid, or heat. The copper should not be less than about 4 X inch, otherwise some of the mercury will become detached. After allowing the copper to remain in the solution for several minutes, it is to be removed and carefully washed with a small stream of water from a wash-bottle, or with water containing a little ammonia; it is then gently pressed between folds of filtering paper until perfectly dry. It is now placed in a small and perfectly clean and dry reduction tube; heat being applied to the closed end, the mercury will volatilise and condense a little distance above the point heated, in the form of a mist- like deposit, very readily discernible by the naked eye. If the sublimate be examined with a low power of the microscope, it will be seen to consist of innumerable spherical globules, which are opaque by transmitted light, and present a very bright silvery lustre under inci-
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