Address THOMAS M. ST. JOHN,
407 West 51st Street,
New York City.
Transcriber's Notes
In the text version, Italic text is denoted by _underscores_ and bold text by =equal signs=.
Obvious punctuation errors have been repaired.
The book contains some inconsistent hyphenation which has been left as printed.
- p. xi. (TOC) "constructiou" changed to "construction"
- p. xiv. (TOC) "The Prodution of Motion" changed to "The Production of Motion"
- p. 27. para. 73. "thick permament magnets" changed to "thick permanent magnets"
- p. 99. para 253. "wabble" may be a typo for wobble but has been left on the off chance that this could be what was intended.
- p. 118. Fig 91. The final column has been scored through but appears to read "CU to ZN"
- p. 131. para. 324, 325. German-silver Wire, G-s W used here but previously G S W used.
- p. 164. para 395. "circuit in closed" changed to "circuit is closed"
- p. 166. para 398. "core inside of the c l" changed to "core inside of the coil" after checking original scans.
- p. 169–170. It appears that a word has been omitted across the page break. "The copper washer, C W, be used." has been changed to "The copper washer, C W, should be used.". (Alternative words are possible!)
- p. 211. No. 35. 5-16 in. changed to 5/16 in.
- p. 213. No. 92, 93. 5-16 in. changed to 5/16 in.
- p. 214. No. 96. and No. 97. 5-16 in. changed to 5/16 in.
- p. 216. Entry for Coulomb moved from end of "C" to above Current.