FOOTNOTES:

Transcriber's Notes:

Illustrations have been moved from the middle of a paragraph to the closest paragraph break. Missing page numbers are connected to blank pages and moved illustrations. The following illustrations have been moved to other pages:

moved Fig. 1 from page 36 to page 38

moved Fig. 2 from page 37 to page 38

moved Fig. 3 from page 92 to page 93

moved Fig. 4 from page 94 to page 93

moved Fig. 5 from page 217 to page 218

moved Fig. 7 from page 225 to page 226

moved Fig. 8 from page 248 to page 249

The word up-hill and uphill has been retained in both versions.

Other than the corrections listed below, printer's inconsistencies in spelling and punctuation have been retained:

changed "spent mainly indoors?" into "spent mainly in-doors?" page 39

changed "his work on "Sleep," as to" into "his work on "Sleep", as to" page 44

changed "them "photographed, stripped to the waist, both" into "them "photographed, stripped to the waist", both" page 144

changed "the 'longshore-man—all at" into "the 'longshoreman—all at" page 180

changed "bar A A, the operator simply" into "bar A A', the operator simply" page 216

changed "meets the breast-bone, until" into "meets the breastbone, until" page 244

changed "out at arms-length, say" into "out at arm's-length, say" page 249

changed "it to the floor. and so" into "it to the floor and so" page 258

changed "and fore-arm work, catch" into "and forearm work, catch" page 274