Organ, 296; board of piano, 280. Spagnoletti disc instrument, 212. Sparking-plug, _102_. Spectacles, use of, 48. Focus, meaning of, 237; principal, 238. Foci, conjugate, 262. Force, lines of, 116. Forces.

• This highest of questions, and ended by joining.
• Ask unusual questions, if haply I might.
• Request: that both eggs and worms might be.
• Fresh pleasure and some tea.
• MEMORY OF MR. COOPER. In the.