TO

SIR WILLIAM GEORGE ARMSTRONG ,

C.B., F.R.S., D.C.L., LL.D.,

SHje ©rigmator of tije JKotfem f^gtitaulic Ägstem,

THIS WORK IS CORDIALLY INSCRIBED

IN GRATEFUL ACKNOWLEDGJIENT

©f tiutcij Juntmess sf)obm m jbggone tags

\

IO HIS FORMER ASSISTANT,

THE AUTHOR.