ERRATA. 



Page 134, line 15, for " Kirchkoff" read " Kirchlioff." 



Page 140, line 5, for "feculae" read "faculse." 



Page 148, line 6th from bottom, for "spool-point" read "spear-point." 



Page 153, last line, before " magnetic " read " south." 



Page 154, first line, omit the word " south." 



Page 159, line 21, for "sieved" read " sifted." 



Page 162, line 2 from bottom, before " latitude" read " magnetic." 



Page 165, line 8, for " town " read "now." 



Page 165, line 14, for "Bennen" read "Benin." 



Page 165, line 18, for " treads " read " trends." 



Page 166, line 10, for " will prove" read "rise from." 



Page 166, line 11, for " to " read " toward." 



Page 172, line 19, for "ground" read "grand." 



Page 172, line 21, for " are without all" read " follow no." 



Page 172, line 24, for "times" read " time." 



Page 172, line 30, for " spring" read "swing." 



Page 172, line 33, before " arc" read " diurnal." 



Page 172, line 33, for " in the visible path of" read " by." 



Page 175, line 25, for " and" read " for." 



Page 178, line 10, for " amount " read " intensity." 



Page 17$, line 8 from bottom, for " solved " read " evolved." 



Page 178, line 2 from bottom, for " cores" read " cones." 



Page 179, line 13, for " wing " read "ring." 



Page 180, line 8, for " wing" read " ring." 



Page 180, line 30, for " 1-20" read "1-10." 



Page 182, line 9 from bottom, for " put " read " pit." 



Page 183, line 6, for "distance" read "squares of the distances." 



Page 183, line 7, "for the distance" read" to the squares of the distances." 



Page 183, in note, for " conlombe " read " Coulombe." 



Page 184, line 10, for " issue from the same end of the coil " read " flow in the same 



direction through the galvanometer." 

 Page 184, line 25, for " magnetic-electric" read "magneto-electric." 

 Page 184, line 26, for " south " read " earth ; " omit " to." 

 Page 184, line 30, for "from electricity and" read "of electricity." . 

 Page 200, line 15, for " ashes" read " oxides." 

 Page 200, line 16, omit " ashes of." 

 Page 200, last line, for " producing" read " emitting." 

 Page 201, line 25, for " oxygen " read " unburned gas." 

 Page 656, line 12, for " 22.05 " read "2.205." 



[Inst.] 63 



