CORRIGENDA.

Page.

11 line 9 from top, for “Modellin” read “Modellim.”

21 footnote, line 2 from bottom, for “watershed” read “westward.”

24 line 2 from top, for “figures” read “fingers.”

47 in heading of last column of table, for “observed-computed” read “computed-observed.”

49 line 7 from top, for “area” read “sea.”

49 footnote, line 3 from bottom, for “k = of 0·13” read “k = 0·13.”

49 footnote, bottom line, in the denominator of the fraction, for “2—r” read “2r.”

51 line 12 from bottom, in last column, for “0” read “—.”

52 line 12 from top, in last column, for “0” read “—.”

54 line 12 from top, the latitude of point No. 353 is “23° 47′ 37″” not “23° 47′ 47″.”

57 line 14 from top, for “Fokani” read “Foqani.”

58 line 14 from top, for “Mukur” read “Muqur.”

59 line 9 from bottom, for “Un Rasein” read “Um Rasein.”

60 line 2 from bottom, in last column, for “highest” read “high.”

61 line 3 from top, delete “minor.”

63 line 8 from top, for “G. Di-ib” read “W. Di-ib.”

72 last line, for “as” read “if.”

75 line 10 from top, for “added of” read “added to.”

76 the observed compass-variation near Halaib Fort was “2° 18′,” not “3° 18′,” and in the observed variation at Helwân the figures given as seconds should be decimals of a minute.

77 the yearly decrease of declination (in three places) should be 6′·3 instead of “6′ 3″.”

82 line 22 from top, for “Wani” read “Wadi.”

83 line 18 from top, for “Um Selim” read “Um Sellim.”

88 line 11 from top, for “Feleiti” read “Felieiti.”

98 line 2 from top, for “Serimtay” read “Serimtai.”

99 lines 4 and 7 from bottom, for “Sabaia” read “Sabahia.”

101 line 25 from top, for “Um Heram” read “Um Heran.”

103 line 9 from top, for “The one” read “The upper one.”

104 line 17 from top, for “heap” read “head.”

105 line 11 from top, for “42° 34′” read “24° 34′.”

109 line 18 from top, for “35° 47′ 10″” read “35° 47′ 13″.”

118 line 11 from bottom, for “curved” read “carved.”

144 lines 10 and 22 for “Meisa” read “Meisah.”

145 top line, for “Meisan” read “Meisah.”

152 line 8 from top, for “Akwantra” read “Akwamtra.”

153 line 8 from top, for “aad” read “and.”

159 line 5 from top, for “Mikreiba” read “Mikeriba.”

159 last line, for “22° 13′ 24″” read “22° 13′ 25″.”

159 last line and footnote, for “Qosier” read “Qoseir.”

160 top line, for “36° 38′ 54″” read “36° 38′ 56″.”

162 line 7 from top, for “to” read “or.”

162 line 5 from bottom, for “Qubit” read “Qubet.”

167 line 10 from top, for “1099 metres” read “1199 metres.”

167 line 15 from bottom, for “Krug” read “Khrug.”

173 line 8 from top, for “Itelma” read “Iteima.”

173 line 10 from bottom, for “34° 44′ 35″” read “34° 41′ 35″.”

176 line 4 from top, for “24° 14′ 44″” read “24° 14′ 41″.”

183 line 4 from bottom, for “Mukhtatat” read “Mukhatatat.”

186 last line, for “east” read “west.”

188 line 9 from top, for “24° 54′ 18″” read “24° 54′ 14″.”

188 footnote, for “23° 57′ 67″” read “23° 57′ 46″.”

189 line 8 from top, delete “respectively.”

194 line 9 from bottom, for “these” read “there.”

204 line 16 from top, for “western” read “southern”

206 line 13 from bottom, for “34° 50′ 49″” read “34° 56′ 49″.”

211 line 12 from bottom, for “which” read “while.”

212 line 20 from top, for “Um Rassin” read “Um Rasein.”

213 line 14 from bottom, for “Kirwaw” read “Kirwau.”

223 line 11 from top, for “exit” read “exist.”

223 line 2 from bottom, for “Hashushenai” read “Mashushenai.”

224 line 18 from top, for “jugged” read “rugged.”

228 last line, for “masses” read “mosses.”

233 line 3 from bottom, for “in” read “on.”

235 footnote, for “Megwal” read “Megwel.”

238 line 9 from top, for “aad” read “and.”

242 line 3 from bottom, before “vary” insert “they.”

245 top line, for “Wadi Sikait” read “Wadi Shait.”

246 the latitude of Galt el Aguz is “23° 32′ 30″” not “23° 31′ 30″.”

248 the latitude of Bir Muqur is “22° 42′ 26″” not “22° 41′ 26″.”

253 top line, for “Mesah” read “Meisah.”

259 line 17 from bottom, for “Dib” read “Dif.”

263 line 8 from top, for “section” read “sections.”

273 top line, for “sprinking” read “sprinkling.”

278 last line, for “XXI” read “XXII.”

304 line 11 from bottom, for “pale” read “free.”

304 line 9 from bottom, for “forms” read “form.”

306 line 7 from top, for “44°” read “34°.”

310 line 11 from top, for “dolorite” read “dolerite.”

317 in the description of the figure, insert the word “to” between “altering” and “granular.”

333 line 2 from top, for “Modergeg” read “Mudergeg.”

339 line 13 from top, for “resemblance” read “semblance.”

341 line 14 from top, for “ericite” read “sericite.”

342 line 18 from top, for “dentritic” read “dendritic.”

342 line 5 from bottom, for “on” read “in.”

346 line 8 from top, for “ancient” read “ancients.”

351 line 13 from top, for “p. 441” read “p. 341.”

353 line 12 from top, for “Magnetite” read “Magnesite.”

358 line 4 from top, for “XV” read “XX.”

360 line 16 from top, for “XX” read “XV.”

366 footnote, line 5 from bottom, for “Megwell” read “Megwel.”

367 footnote, line 3 from bottom, for “or” read “of.”

387 line 18 from top, for “Mitab” read “Mitba.”

390 line 14 from bottom, for “Balamhandeit” read “Belamhandeit.”

392 line 18 from top, for “Mokhatatat” read “Mukhatatat.”

392 line 25 from top, for “Kukhit” read “Mukhit.”

393 second column, line 16 from top, for “Kalabat” read “Kalalat.”

394 last line, for “Zebeged” read “Zeberged.”