338 Researches in the Theory and Calculus of Operations. 



alternations of light and darkness, etc. to come into play as 

 reactive and combining forces with those previously em- 

 barked and busy in the teeming womb of Nature, could 

 the more elevated forms of life arise. These species which 

 would have been arrested in their development but for the 

 assistance of such new redeeming forces, could now be 

 advanced higher in the scale of being, and thus a superior 

 race evolved from an inferior one (Darwin). 



John Paterson. 



