Terrestrial and Celestial Globes Volume 2: Their History and Construction Including a Consideration of their Value as Aids in the Study of Geography and AstronomyStevenson, Edward Luther
History
Terrestrial and Celestial Globes Volume 2: Their History and Construction Including a Consideration of their Value as Aids in the Study of Geography and Astronomy
Stevenson, Edward Luther
Geography -- History; Globes
of the painted globes stood toward the poles of the heavens. On each
the twenty-four hours were placed around the equinoctial so as to show
the time of day when the sun shone out, by the boundary where the half
of the globe at any time enlightened by the sun was parted from the
other half in the shade: the enlightened parts of the terrestrial globe
answering to the like enlightened parts of the earth at all times: so
that whenever the sun shone on the globe one might see to what place the
sun was then rising, to what place it was setting, and all the places
where it was then day or night, throughout the earth.”
[Illustration: Fig. 127. Portrait of James Ferguson.]
Turning his attention especially to the movements of the stars, he
contrived an orrery to show the motions of the earth and the moon, of
the sun and the planets, both diurnal and annual, and it was in his
first literary attempt, published in the year 1746, that he described
‘The Use of a New Orrery.’ Ferguson published many works on scientific
subjects, lectured extensively before learned societies, was honored
with the royal bounty of King George III, and became a member of the
Royal Society without initiatory or annual fees.
Of globes constructed by Ferguson other than those he contrived in his
boyhood days, eight copies are known. In the collection of The Hispanic
Society of America (Fig. 127a), there appears to be a unique example of
his first published globe work, constructed perhaps as early as the year
1750, since it records the route followed by the Englishman, George
Anson, in circumnavigating the earth in his expedition or expeditions of
the years 1740-1744, and omits reference to the expeditions of Captain
Cook. The terrestrial globe, a solid wooden ball, 7 cm. in diameter, is
enclosed in a black leather covering, on the inner surface of which is
pasted an engraved gore map of the celestial sphere. It appears to be
constructed as were those referred to by Moxon in his catalogue of
globes which were “made and sold by himself on Ludgate Hill,” that is,
“concave hemispheres of the Starry Orb which serve for a case to a
Terrestrial Globe of 3 inches in diameter, made portable for the
Pocket.” The covering of this Ferguson globe is made to open on the line
of the celestial equator. In a neat cartouch placed in the North Pacific
is the author and title legend reading, “A New Globe of the Earth by
James Ferguson.” The meridians are drawn at intervals of fifteen
degrees, the prime meridian passing through Greenwich, and the parallels
are drawn at intervals of ten degrees, being graduated on the meridian
of 145 degrees west, excepting the tropics and the polar circles, which
are drawn in their proper latitudes, respectively 23-1/2 degrees from
the equator and 23-1/2 degrees from the poles. Ferguson followed such
geographical records as were laid down by Hondius in his world map of
the year 1611, or by Greuter in his globe map of the year 1632 in the
Public-domain text, read in full here on John Shaqi.
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