There is, moreover, a third kind of rubbish, which, though having an animal origin, consists chiefly of earthy matter, and that is the shells of oysters, and other shell-fish. Whence go they, since these shells are of a comparatively indestructible nature, and thousands of such fish are consumed annually in the metropolis? What, the inquirer asks, becomes of the refuse bony coverings of such fish?
Let us first, however, endeavour to estimate what quantity of each of these three kinds of rubbish is annually produced in London, beginning with the refuse earthen commodities.
There is no published account of the quantity of crockeryware annually manufactured in this country. Mr. McCulloch tells us, “It is estimated, that the value of the various sorts of earthenware produced at the potteries may amount to about 1,700,000l. or 1,800,000l. a year; and that the earthenware produced at Worcester, Derby, and other parts of the country, may amount to about 850,000l. or more, making the whole value of the manufacture 2,550,000l. or 2,650,000l. a year.” What proportion of this quantity may fall to the share of the metropolis, and what proportion of the whole may be annually destroyed, I know of no means of judging. We must therefore go some other way to work in order to arrive at the required information. Now, it has been before shown, that the quantity of “dust,” or dry refuse from houses, annually collected, amounts to 900,000 tons or chaldrons yearly; and I find, on inquiry at the principal “yards,” that the average quantity of Potsherds and broken crockery is at the rate of about half a bushel to every load of dust, or say 1 per cent. out of the entire quantity collected. At other yards, I find the proportion of sherds to be about the same, so that we may fairly assume that the gross quantity of broken earthenware produced in London is in round numbers 9000 loads or tons per annum. The sherds run about 250 pieces to the bushel, and assuming every five of such pieces to be the remains of an entire article, there would be in each bushel the fragments of fifty earthenware vessels; and thus the total quantity of crockeryware destroyed yearly in the metropolis will amount to 18,000,000 vessels.
As to the quantity of refuse bricks, the number annually produced, which is between 1,500,000,000 and 2,000,000,000, will give us no knowledge of the quantity yearly converted into rubbish. In order to arrive at this, we must ascertain the number of houses pulled down in the course of the twelvemonth; and I find, by the Returns of the Registrar-General, that the buildings removed between 1841 and 1851 have been as follows:—
Decrease in the Number of Houses throughout London between 1841 and 1851.
| Total Decrease in 10 Years. | Annual Average Decrease. | |
|---|---|---|
| St. Martin’s | 116 | 11·6 |
| St. James’s, Westminster | 130 | 13·0 |
| St. Giles’s | 181 | 18·1 |
| Strand | 389 | 38·9 |
| Holborn | 86 | 8·6 |
| East London | 11 | 1·1 |
| West London | 265 | 26·5 |
| London, City of | 592 | 59·2 |
| Whitechapel | 2 | ·2 |
| St. Saviour’s, Southwark | 46 | 4·6 |
| St. Olave’s | 158 | 15·8 |
| Total | 1976 | 197·6 |
Thus, then, we perceive that there have been, upon an average, very nearly 200 houses annually pulled down in London within the last ten years, and I find, on inquiry among those who are likely to be the best-informed on such matters, that each house so pulled down will yield from 40 to 50 loads of rubbish; so that, altogether, the quantity of refuse bricks, slates, tiles, chimney-pots, &c., annually produced in London must be no less than 8000 loads.
But the above estimate refers only to those houses which have been pulled down and never rebuilt; so that, in order to arrive at the gross quantity of this kind of rubbish yearly produced in the metropolis, we must add to the preceding amount the quantity accruing from such houses as are pulled down and built up again, or newly fronted and repaired, which are by far the greater number. These, I find, may be estimated at between 5 and 10 per cent. of the gross number of houses in the metropolis. In some quarters (the older parts of London, for instance,) the proportion is much higher, while in the suburbs, or newer districts, it is scarcely half per cent. Each of the houses so new-fronted or repaired may be said to yield, on an average, 10 loads of rubbish, and, at this rate, the yearly quantity of refuse bricks, mortar, &c., proceeding from such a source, will be 150,000 loads per annum; so that the total amount of rubbish produced in London by the demolition and reparation of houses would appear to be about 160,000 loads yearly.
The quantity of refuse oyster shells may easily be found by the number of oysters annually sold in Billingsgate-market. These, from the returns which I obtained from the market salesmen, and printed at p. 63 of the first volume of this work, appear to be, in round numbers, 500,000,000; and, calculating that one-third of this quantity is sent into the country, the total number of shells remaining in the metropolis may be estimated at about 650,000,000. Reckoning, then, that 500 shells go to the bushel (the actual number was found experimentally to be between 525 and 550), and consequently that 20,000 are contained in every load, we may conclude that the gross quantity of refuse oyster shells annually produced in London average somewhere about 30,000 loads. That this is an approximation to the true quantity there can be little doubt, for, on inquiry at one of the largest dust-yards, I was informed by the hill-man that the quantity of oyster-shells collected with the refuse dust from houses in the vicinity of Shoreditch, Whitechapel, and other localities at the east-end of the metropolis, averages 6 bushels to the load of dust; about the west-end, however, half a bushel or a bushel to each load is the average ratio; while from the City there is none, the house “dust” there being free from oyster-shells. In taking one district, however, with another, I am assured that the average may be safely computed at 2 bushels of oyster-shells to every 3 loads of dust; hence, as the gross amount of house-dust is equal to 900,000 tons or loads per annum, the quantity of refuse oyster-shells collected yearly by the dustmen may be taken at 15,000 loads. But, besides these, there is the quantity got rid of by the costermongers, which seldom or never appear in the dust-bins. The costers sell about 124,000,000 oysters per annum, and thus the extra quantity of shells resulting from these means would be about 12,400 loads; so that the gross quantity of refuse oyster-shells actually produced in London may be said to average between 25,000 and 30,000 loads per annum.
There still remains the quantity of refuse earth to be calculated; this may be estimated as follows:—