History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c5.51

v1.c5.51

| Fig | | Page |
| 38. | Sketch of the Wootz making crucible | 135 |
| 39. | Inside view of an Ancient Zinc ore mine at Zawar. Inside view of the same mine showing wooden scaffold and support | 138 |
| 40. | Some mining tools of iron found inside the Mochia mine, Zawar | 138 |
| 41. | Stone Pestal and Hammer used by ancient Zn smelters at Zawar | 139 |
| 42. | Artists impression of down draft distillation apparatus used for production of Hg, Zn, etc | 140 |
| 43. | Photograph shows two of the zinc retorts found at Zawar | 141 |
| 44. | Sketch of the complete zinc retort furnace, showing retorts and condenser vessel in position | 142 |
| 45. | Ag-Cu alloy phase diagram | 148 |
| 46. | Copper rich side of the Cu-Sn alloy phase diagram | 149 |
| 47. | Chinese system of production of brass using a bent tube for the conduction of zinc vapour to the crucible containing molten copper | 150 |
| 48. | Copper rich part of the Cu-Zn phase diagram and change in mechanical properties | 151 |
| 49. | Photograph of a brass chandelier of 8th century A.D. showing the chain cast in one piece | 155 |
| 50. | Five steps of the traditional method of casting brass and bronze idols in South India using ‘cire perdue’ process | 156 |
| 51. | A Bronze casting of Lord Nataraja made by ‘cire perdue’ process | 157 |
| 52. | Terracota mould disks for coins and their assembly ready for casting | 158 |
| 53. | Photograph of an early iron cannon (Tanjor) made by fixing iron pieces inside number of iron rings | 161 |
| 54. | Drawing shows the probable method of joining two iron blocks in Dhar iron pillar | 162 |
| 55. | Photograph shows the fixing of a massive iron square ring to form the ornamented top of Delhi’s iron pillar | 162 |
| 56. | Fe-C phase diagram showing microstructure of five typical Fe-C alloys and temperature ranges for common thermo-mechanical treatment | 164 |
| 57. | Some of the smithy tools found at Taxila (3rd century B.C. to 5th century A.D.) | 166 |
| 58. | Some other smithy tools found at the same site | 167 |
| 59. | Sketch of a reverberatory furnace described by Mahmud | 168 |