CONTENTS. Vll 



40. Volume of glass vessel from weight of its volume of H2O or Hg. ... 72 



41. Reductions of weighings in air to vacuo 73 



42. Reductions of densities in air to vacuo 73 



Mechanical Properties 



43. Introduction and definitions 74 



44. Ferrous metals and aUoys: Iron and iron alloys 75 



45. " " " '' carbon steels 76 



46. " " " " heat treatments 76 



47. " " " " alloy steels 77 



48. " " " " steel wire, specification values 78 



49. " " " " " " experimental values 78 



50. " " " " semi-steel 78 



51. " " " " steel wire rope, specification values ... 79 



52. " " " " plow-steel rope, " " .... 79 



53. " " " " steel wire rope, experimental values ... 79 



54. Aluminum, miscellaneous 80 



55. Aluminum: (c) sheet, experimental values 80 



" (b) " specification values 81 



56. Aluminum alloys 81 



57. Copper: miscellaneous experimental values . 82 



58. " rolled, experimental values 82 



59. " wire, specification values, hard-drawn 82 



60. " " medium hard-drawn S;^ 



61. " " soft or annealed 83 



62. " plates 83 



63. Copper alloys: nomenclature 83 



64. " " copper-zinc alloys or brasses 84 



" " copper-tin " " bronzes 84 



65. " " three or more metals 85 



66. Miscellaneous alloys 88 



67. " metals: tungsten; zinc; white metal 89' 



68. Cement and concrete : (a) cement 90 



" " " (b) cement and cement mortars ....... 90 



" " " (c) concrete 91 



69. Stone and clay products: (a) American building stones 92 



" " " " (5) Bavarian building stones 92 



" " " " (c) American building bricks 93 



" " " " (d) brick piers, terra-cotta piers 93 



" " " " (e) various bricks 93 



70. (a) Sheet rubber 94 



(b) Leather belting 94 



71. Manilla rope 95 



72. Woods: hardwoods, metric units 96 



73. " conifers, metric units 97 



