Corrigenda. 



Page 18, line 31, for spou ting-spring read spouting spring. 



— 24, — 34, for is altered read is then altered. 



— 26, — 29, for ganged read gauged. 



— 30, — 11, for used by uuit is read unit is used by. 



— 38, — 1, omit from. 



— 49. In Table I against Nåmafjall No. 1 in column H.^ 49,0 "lo should be 54,4 "lo, and 



against Nåmafjall No. 4 in the same column should stand 4 9,o "lo. 



