Beyond the introduction of the spider line it is unnecessary to mention the various steps by which the Gascoigne micrometer assumed the modern forms now in use, or to describe in detail the suggestions of Hooke, 4 Wren, Smeaton, Cassini, Bradley, Maskelyne, Herschel, Arago, Pearson, Bessel, Struve, Dawes, &c., or the successive productions of the great artists Ramsden, Troughton, Fraunhofer, Ertel, Simms, Cooke, Grubb, Clarke and Repsold.
To avoid such error Dawes used double wires, not spider webs, placing the image of the star symmetrically between these wires, as in fig.
Dawes, who employed a micrometer of the English type (figs.
Dawes, formerly general purchasing agent of the American Expeditionary Force.
William Dawes, 1713-1724.
The head of Woolloomooloo Bay, Sydney Cove, the shallow bay between Dawes and Millers Point, and Darling Harbour, are lined with wharves.
Dawes very successfully used this micrometer in conjunction with a filar micrometer, and found that the precision of the measures was in this way greatly increased (Monthly Notices, vol.
2 Dawes (Monthly Notices, January 1858, and Mem.
Dawes found the best method for the purpose in question was to limit the aperture of the object-glass by a diaphragm having a double circular aperture, placing the line joining the centres of the circles approximately in the position angle under measurement.
Dawes successfully employed the double circular aperture also with Amici's micrometer.
There are considerable difficulties of construction, but these have been successfully overcome by Dollond; and in the hands of Dawes (Mem.
Under the Dawes Allotment Act of February 1887, and a special statute of March 1889, an agreement was made with some Indians, and about 11,000,000 acres, or about half of the reserve, was thrown open to settlement on the 10th of February 1890.
Dawes as United States Senator from Massachusetts in 1893; and in 1899 and in 1905 was re-elected to the Senate, where he became one of the most prominent of the Republican leaders, and an influential supporter of President Roosevelt.
From this place he proceeded to Constantinople, where he received similar civilities from Sir Thomas Bendish, the English ambassador, and Sir Jonathan Dawes, with whom he afterwards contracted an intimate friendship. While at Constantinople he read and studied the works of St Chrysostom, whom he preferred to all the other Fathers.
HENRY LAURENS DAWES (1816-1903), American lawyer, was born at Cummington, Massachusetts, on the 30th of October 1816.
On leaving the Senate, in 1893, he became chairman of the Commission to the Five Civilized Tribes (sometimes called the Dawes Indian Commission), and served in this capacity for ten years, negotiating with the tribes for the extinction of the communal title to their land and for the dissolution of the tribal governments, with the object of making the tribes a constituent part of the United States.'
Dawes died at Pittsfield, Mass., on the 5th of February 1903.
On the 27th of April Anne gave a solemn assurance of her fidelity to the Hanoverian succession to Sir William Dawes, archbishop of York; in June she sent Lord Clarendon to Hanover to satisfy the elector.
In the library are portraits of Paul Revere, William Dawes and Lord Percy.
Although the British had tried to keep this movement a secret, Dr Joseph Warren discovered their plans and sent out Paul Revere and William Dawes to give warning of their approach.