On the presence of arsenic in the vapours of bone manure : a contribution to sanitary science / by James Adams.

  • Adams, James
Date:
1876
Catalogue details

Licence: Public Domain Mark

Credit: On the presence of arsenic in the vapours of bone manure : a contribution to sanitary science / by James Adams. Source: Wellcome Collection.

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    ascertained —First, the directions of the wind which will bring the vapours of the manure-works down upon the grounds of Bunchrew ; and second, the direction of the winds which actually do prevail in the locality. Referring to the first point, I find from careful obser- vation made on the spot, and corroborated by reference to the Ordnance Survey plans, that when the wind is from the south, or west, or south-west, any vapours which may be discharged from the manure works are necessarily wafted down upon the dwellings and property of Bunchrew. But when the wind is from the north, or east, or north-east, such vapours will be diverted from the property. Regarding the actual direction of the winds which do prevail, I have fortunately found a reliable source of information in the returns of daily observations made at the residence of Arthur Forbes, Esq. of Culloden, and published by the Registrar-General for Scotland. The properties of Culloden and of Bunchrew are for meteorological observations strictly one district, and for the present purpose any such observations made at one of the points named are fairly applicable to the other. I have compiled an abstract of these returns extending over the years 1872-73-74, when they terminate. They are complete for 1872, but imperfect for 1873 and 1874. They record the state of the wind for 759 days, viz. :— For 1872 ; ; 366 days. 1873 ; ; : MU LOTAPeeSe Ru cemreen 0432 2 Excluding extreme points of the compass, and limiting our regard to the points which directly affect the relation of the manure works to the Bunchrew estate, I have the following result :— South, . . 170 days. North. 5 te. 32) days. WY eats! : thy tr 200.55 Wastes posta nce koe 645 South-west, 152 ,, North-east, . 32. ,, Dotaljsgin 7/527 Otals eek ko Calm or variable, . . . 41 days. From these returns it is demonstrated that on at least six days out of every eight the wind blows from the manure works over Bunchrew grounds. It is the character of these prevailing winds to be already so laden with moisture, that they can do little in the way of absorbing any watery vapours which may emanate from the works, and their tendency will be to drive such vapours in full undiluted force down upon Bunchrew grounds. On calm or variable days any tendency to currents in the air is usually in the direction of the prevailing winds, and on such days therefore the offensive vapours referred to will incline to drift and gravitate in a downward flow upon the lower level of Bunchrew property. Another peculiar condition of the locality tends still farther to aggravate any nuisance arising from vapours wafted by the south
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