This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1899 Excerpt: ...rail)--1st blow of weight falling 5 feet gave J$ deflection. 2nd „ „ „ 10 „ „ 2" 3rd „ „ „ 20 „ „ 5 „ Microscofic Examination, No. 3. A polished etched vertical longitudinal section from the centre of the top of the head, on examination under the microscope, revealed the presence of a hardened skin 0-004 inch in thickness. Bending Tests, No. 3. Of the longitudinal horizontal slices cut from the head, No. 1, or uppermost layer, 0-015 inch in thickness, bent and broke at an angle of about 95. A second piece, 0-30 inch, broke at an angle of about 85. No. 2 layer, 0-03 inch below the surface, bent over close; and Nos. 3 and 4 layers bent over close. The chemical analysis, No. 3, was:--Per cent. Carbon 0-410 Manganese 1-066 Silicon 0-070 Sulphur 0-180 Phosphorus 0-067 Arsenic 0-047...