00000386 |
Previous | 386 of 595 | Next |
|
small (250x250 max)
medium (500x500 max)
Large
Extra Large
large ( > 500x500)
Full Resolution
All (PDF)
|
UNCERTAIN SPACES OF EQUAL TEMPERATURE. ■
Isochimenal Lines. Isotheral Lines.
347
Fig. 156.—Climate of the British Isles.
We can understand the decided influence which these inequalities, with
their alternations of warmth in countries having in other respects the
same mean temperature, must exercise on plants and animals. One kind,
which can well support the severity of winter without dreading'the heats
of summer, is propagated over vast regions in the interior of continents;
another kind, which shrinks from the low winter temperatures, when remote from the sea-shore, does not pass latitudes which it crosses by several degrees in the neighborhood of the ocean. Thus the elk lives in the peninsula of Scandinavia, which is bathed by the tepid waters of the Gulf
Stream at 700 miles farther north than in Siberia, with its extremes of
heat and cold.*
The course of the various isothermal lines depends in great part simply
on probabilities, since between all the points whose temperature has been
observed during a longer or shorter period of years, or only months, there
remain here and there wide intervals where no thermometrical notes have
yet been made. There are uncertain spaces through which meteorologists
can not draw lines of equal temperature, inasmuch as they, have no series
of precise observations on which to base them. Thousands of persons in
the United States, Canada, the Antilles, Hindoostan, and South Africa
have joined their efforts to those.of all the official savants, to note down
the innumerable oscillations of heat and cold which, by their grouping,
* See the two following books.
| Title | The ocean, atmosphere, and life |
| Creator | Reclus, Elisée |
| Publisher | Harper |
| Place of Publication | New York |
| Date | 1873 |
| Language | eng |
| Type | Books/Pamphlets |
| Title | 00000386 |
| Type | Books/Pamphlets |
| Transcript | UNCERTAIN SPACES OF EQUAL TEMPERATURE. ■ Isochimenal Lines. Isotheral Lines. 347 Fig. 156.—Climate of the British Isles. We can understand the decided influence which these inequalities, with their alternations of warmth in countries having in other respects the same mean temperature, must exercise on plants and animals. One kind, which can well support the severity of winter without dreading'the heats of summer, is propagated over vast regions in the interior of continents; another kind, which shrinks from the low winter temperatures, when remote from the sea-shore, does not pass latitudes which it crosses by several degrees in the neighborhood of the ocean. Thus the elk lives in the peninsula of Scandinavia, which is bathed by the tepid waters of the Gulf Stream at 700 miles farther north than in Siberia, with its extremes of heat and cold.* The course of the various isothermal lines depends in great part simply on probabilities, since between all the points whose temperature has been observed during a longer or shorter period of years, or only months, there remain here and there wide intervals where no thermometrical notes have yet been made. There are uncertain spaces through which meteorologists can not draw lines of equal temperature, inasmuch as they, have no series of precise observations on which to base them. Thousands of persons in the United States, Canada, the Antilles, Hindoostan, and South Africa have joined their efforts to those.of all the official savants, to note down the innumerable oscillations of heat and cold which, by their grouping, * See the two following books. |
|
|
|
|
|
|
| B |
|
| C |
|
| G |
|
| H |
|
| M |
|
| T |
|
| U |
|
| Y |
|
|
|
