CORRECTIONS AND INSERTIONS. 



All contributors to volume -1 have been invited to send in corrections and inser- 

 tions to be made in their contributions, and the volume lias been scanned with 

 sonic care by the Editor. The following are such corrections and insertions as are 



deemed worthy of attention : 



it 



a 



Page 20, in formula for tan X ; for 11 a — " reada-\-. 



21, first line of foot-note ; " " unchanged length " " unchanged direction, 



21, foot-note, 2d equation ; " "y/x — " " yjx=. 



27, third formula; " "a = " " — a=. 



29, formulas (8) ; " "cos{v — /*) " " <Tcos{v — fi). 



36, figure '■'>, letter the triangle in the upper right-hand corner, a b 



c 



37, formula for T, reverse si^ns of G and Q. 



.'!7, line 13 from top; for "page 34" read page 31. 



59, last formula ; " "4" "2. 



80, foot-note; " "p. 74" "p. 54. 



The above are simply misprints, and the correct expressions were em- 

 ployed by Dr Becker in the deductions and computations. 

 L85, erase the misplaced "s" to the left of figure 4. 

 22:;, line 20 from top; for " Wasacht" read Wasatch. 



304, " 8 " " " "magnatic" " magnetic. 



" 306, " 2 " bottom; " "no. 85" " no. 65. 



" 314, " 14 " top; " "Wahnapital" " Wahnapitae. 



" 318, lines 15 and 17 from top; " " 



" 331, line 5 from top; " " Walter MeOuat" " Walter McQuat. 



" 333-348; " " Contchiching " " Coutchiching. 



" 340, line 13 from top ; " " Vermiline " " Vermilion. 



" 341, lines 14 &20from bottom ; " "RatRoat" " Rat Root. 



" 342, line 1 from bottom ; " "no. 9" " no. 1. 



" 340-348; " "AticOban" " AticOkan. 



:!C>L', line 2(1 from top; after (" true meridian ") omit and. 



363, " *i " " omit "obviously." 



;;(;:;, " s " " after " Carboniferous " insert systems. 



363, " '.) " " omit "systems." 



364, " s " bottom ; after " courses " omit of them. 



365, " 14 " top; for " Belanus" read Balanus. 



366, " 4 " bottom; enclose" Yoldxa arctica of Sars " in parentJiesis. 

 369, " (> " top; for " has been formed " read has also been formed. 

 400, " 22 " bottom; " "B.G.Harrington" " B.J.Harrington. 

 40'.), " 13 " " " " these" " them. 

 109, " 7 " " " "Sasiothrix" " Lasiothrix. 

 41(1, " 7 " top; " " hair" " base. 

 no. " pi " •• after " closely " insert or loosely. 



(i 



