ERRATA. 
Page 618, line 19, /or Makerstown read Brisbane. 
644, Table 67. The bracket should have the arrowhead ). 
775, line 18, /or inch read inches. 
805, after line 15, insert Gib. No. 9. (M) 7'376. 
805, line 4 from below,/or 8'512 read 8'515. 
861, line 3 from below, /or 0’38035 read 0'39644. 
861, line 3 from below, /or 0‘38019 read 0'39628. 
862, line 5, /or 0-01303 read 0-01304. 
886, line 17 from below, /or 30 read 34. 
888, line 16 from below, /or 28 read 22. 
903, line 7 from below, /or comparisons read weighings. 
