174 Transactions of the Royal MiGrosGO]pical Society. 
the rays already hent upon entering the body of the slide, and 
tending them to the right and to the left of a line. 
Yery great pleasure is felt in being able to agree with Mr. 
Kogers " that light is ' of too coarse a nature ' to enable us to see 
particles of matter as small as -2 o oVo^ of an inch, is a conclu- 
sion which can be refuted without the slightest difficulty," for 
Mr. Crisp's Lord's Prayer, with the letters 2T^oioo^^ of an inch 
is in itself a handy and indisputable refutation, if the ^ looooooo of 
an inch be analyzed, brought down to its smallest fraction of the 
contorted intersected line forming the letter, and then reduced to 
its square root. 
