British Rainfall 1897, p.19
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British Rainfall 1897 page19
of the longer period had been allowed for. Sometimes, but very rarely, other features have been recognised, of which one of the few instances occurs only two stations further on. Monk Coniston Park, and Gardens, the long-period record gives 75.9 in., the shorter period 87.4 in. According to the previous rule, the mean would be 80 inches, but we have given 83 inches, because the old gauge was, as is shown, nearly 5 ft. above the ground, and in a very exposed part of the park, so that, indisputably, it recorded too little; and, correcting for that, we obtain 83 in., which we are sure is nearer the truth than 80 in. We may now turn to the maps. Of the orographical one we need say only that having seen it in Dr. Mill's very interesting paper on The English Lakes, we thought that we could not do better than, with his consent and that of his publishers, transfer it to our pages. Nothing could give a better idea of the distribution of High Lands in the Lake District, or tend more to facilitate the study of the rainfall map which faces it. The rainfall map could not, as we have stated, contain every individual site upon which a rain gauge has been at work; but there are on it nearly 100 entries, each being the average depth of rain (in inches) which falls over the spot covered by the figures. Moreover, we have drawn upon the map what are known as isohyetal lines, lines of equal mean rainfall, and we have adopted a plan which we have not noticed in any previous publication, viz., increased the thickness of the line for the greater amounts; thus the mean line of 40 inches in the N.E. corner of the map is not thicker than a hair [fine line], whereas the line for 100 inches is quite thick [thick line] As regards the course of these lines, they were drawn primarily from the whole of the mean values as plotted, but before being finally adopted, were in a few cases slightly modified. It may be well to point out some illustrative cases. Nearly two miles inside the Eastern portion of the 100 inch area will be seen Fairfield, with 85 inches, and away to the West will be seen Esk Hause with the same amount. The reason for not so curving the 100 in. line as to exclude these stations is, that both are very high and exposed positions, where the amount collected, though doubtless correct for those windy spots, does not represent the fall of the district surrounding them. The same is true of the 76 in. (Patterdale, Stang End), which will be seen sitting on the line of 90 inches! We saw that gauge in 1866, and doubtless the 76 in. truly represents what it collected, but it was |
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