and Horticultural Halls. A number of others, of greater or less
pretensions, will enable the visitor to exclaim, with more or less
truth, toward the dusty evening, "Fate cannot harm me: I have dined
to-day."

"Dusty," did we say? The ceaseless sob of engines that rob the
Schuylkill daily of six millions of gallons to sprinkle over
asphaltum, gravel and greensward demands recantation of the word.
Everything has been foreseen and considered, even the dust of the
earth. George's Hill Reservoir can, on occasion, give the pumps
several days' holiday, and keep all fresh and dewy as the dawn.

Some industries meet us in the Centennial list that are not to be
detected in the United States census or any other return we are
acquainted with. What train of ideas, for example, is suggested to the
average reader by the Roll-Chair Company? The rolling-stock of this
association turns out, on inquiry, to be an in-door variety of the
conveyance wherein Mrs. Skewton was wont to take the air under the
escort of Major Bagstock. It is meant for the relief of those who wish
to see everything in the Main Building without trudging eleven miles.
Given an effective and economical motive-power, the roll-chair system
would seem to meet this want. The reader of _Dombey and Son_ will
recollect the pictorial effect, in print and etching, of the popping
up of the head of the propellent force when Mrs. S. called a halt, and
its sudden disappearance on her directing a resumption of movement.
The bobbing up and down of four hundred and fifty heads, like so
many seals, will impart a unique aspect to the vista from one of the
interior galleries of the great hall. The stipulated tax of forty
dollars on each of these vehicles will necessitate a tolerably active
undulation of polls if the company is to make both ends meet--granting