. During these two fractions of the revolution but, after certain modification of details, M. Trouve has suc- densely compacted, so that the block is hard and non-friable. ceeded in giving it a speed of 614 feet per second. (which areeach about 30°) the magnetic surfaces designed Mr. Albert… … them and into the re- acquisition to their cabi- Fie. 4, Fia. 5. cess of the recessed plate, nets; for it will serve asa of numerous expcri- parts of the slotted plate being bent outward to form an coil is not then,incited to revolve. The result is a notable loss aperture to admit the locking…
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![An illustration from Color values in monochrome [microform] : a lecture on orthochromatic photography delivered before the Canadian Institute, February 16th, 1901 (1901)](https://img.insideoutlibrary.com/img/200/ia-cihm_72137-35-1.webp)
