RAMSDEN THE OPTICIAN.

It was his custom, to retire in the evening to what he considered the

most comfortable corner in the house, and take his seat close, to the

kitchen fireside, in order to draw some plan for the forming a new

instrument, or scheme for the improvement of one already made. There,

with his drawing implements on the table before him, a cat sitting on

the one side, and a certain portion of bread, butter, and a small mug of

porter placed on the other side, while four or five apprentices commonly

made up the circle, he amused himself with either whistling the

favourite air, or sometimes singing the old ballad of

"If she is not so true to me,

What care I to whom she be?

What care I, what care I, to whom she be!"

and appeared, in this domestic group, contentedly happy. When he

occasionally sent for a workman, to give him necessary directions

concerning what he wished to have done, he first showed the recent

finished plan, then explained the different parts of it, and generally

concluded by saying, with the greatest good humour, "Now see, man, let

us try to find fault with it;" and thus, by putting two heads together,

to scrutinize his own performance, some alteration was probably made for

the better. But, whatever expense an instrument had cost in forming, if

it did not fully answer the intended design, he would immediately say,

after a little examination of the work, "Bobs, man! this won't do, we

must have at it again;" and then the whole of that was put aside, and a

new instrument, begun. By means of such perseverance, he succeeded in

bringing various mathematical, philosophical, and astronomical

instruments to perfection. The large theodolite for terrestrial

measurements, and the equal altitude instrument for astronomy, will

always be monuments of his fertile, penetrating, arduous, superior

genius! There cannot be a lover (especially of this more difficult part)

of philosophy, in any quarter of the globe, but must admire the

abilities, and respect the memory, of Jesse Ramsden--_Practical

Observations on Telescopes_.

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The Mirror of Literature, Amusement, and Instruction. Volume 10, No. 266, July 28, 1827 · 第 34 / 35 题