TO

THE RIGHT HONORABLE AND HONORABLE

THE MANAGERS

OF

THE ROYAL INSTITUTION OF GREAT BRITAIN,FREDRICK ACCUM,

CHEMICAL OPERATOR TO THAT CORPORATION,DEDICATES,

BY THEIR PERMISSION,

AND

WITH THE HIGHEST RESPECT AND GRATITUDE,THIS ATTEMPT,

TO PROMOTE THE GENERAL PURPOSESOF

THEIR ESTABLISHMENT,

BY EXTENDING THE DIFFUSIONOF

SCIENCE