Page 6, para. 5, line 6, for “have before stated” read “shall state.”

Page 20, last line but one, for “altogether” read “all together”

Page 25, para. 3, line 5, for “descriptive” read “disruptive.”

Page 30, para. 3, line 9, for “expansive” read “expansion.”

Page 31, para. 3, line 1, for “art” read “act.”

Page 32, para. 7, line 9, for “considerable” read “considerably.”

Page 32, para. 7, line 10, for “Robert” read “Piobert.”

Page 35, para. 3, line 1, for “sulphurate of Potassia” read “sulphide of Potassa.”

Page 36, para. 4, lines 1 and 2, for “which is a mortar” read “the chamber being.”

Page 40, last line but 3, for “Polyreetes” read “Polyorcetes.”

Page 41, para. 4, line 10, for “ix” read “xii.”

Page 53, para. 2, line 9, for “incredible” read “incredibly.”

Page 66, para. 6, line 2, after “has” insert “a”

Page 78, para. 5, line 3, for “753in.,” read “·753in.”

Page 78, para. 5, line 3, for “16” read “14¹/₂.”

Page 79, line 4, for “600” read “6,000.”

Page 84, para. 2, line 1, for “Latinat” read “Catinat.”

Page 84, para. 3, line 1, for “masquitairy” read “mousquetaires.”

Page 86, para. 10, line 2, for “Carabins ragees,” read “Carabines rayÉes.”

Page 86, para. 12, line 1, for “subaltern officers” read “Non-Commissioned Officers.”

Page 89, line 3, for “range” read “rayÉ.”

Page 89, line 3, for “ball culot” read “balle À culot.”

Page 91, para. 4, last line, for “⁷/₁₀₀” read “¹/₁₀₀”

Page 93, para. 8, line 1, for “wounds” read “rounds.”

Page 98, para. 1, lines 6 and 7, for “possible. For,” read “possible; for”

Page 103, para. 3, line 7, for “proportionary” read “proportionate.”

Page 103, para. 5, line 4, for “reserved” read “reversed.”

Page 105, para. 6, line 3, for “horn-wood” read “hora, wood.”

Page 112, para. 1, line 8, after “direction,” insert “b.”

Page 114, para. 2, line 7, for “16-48-80” read “16+48+80.”

Page 115, para. 2, line 2, for “sine” read “tangent.”

Page 115, para. 2, for “plate 21, fig. 3,” read “plate 22, fig. 3.”

Page 119, para. 3, line 1, after “moving,” insert “in.”

Plate 21, fig. 5, should be lettered as fig. 4. plate 22.