Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Willesden]
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GEOLOGICAL CHARACTER OF DISTRICT. I am indebted to Messrs. McVitie & Price for their kindness in furnishing me with the following new facts concerning the underlying Strata, as discovered by a boring at their works in Willesden.
Details of Strata discovered during boring of Artesian Well at Messrs. McVitie & Price's, Lower Place. Total depth 837 feet. Boring commenced the middle of June, 1902, finished the end of August, 1902.
| Depth, feet. | Thick ness. | Depth. feet. | Thick ness. | ||
|---|---|---|---|---|---|
| 52 | 52 | Yellow Clay | 359 | 30 | Hard chalk |
| 62 | 10 | Blue Grey Clay streaked | 366 | 7 | Flint |
| 368 | 2 | Chalk & small flint | |||
| 80 | 18 | Blue Grey Clay | 438 | 70 | Chalk and flint |
| 123 | Water level | 513 | 75 | Chalk | |
| 126 | 46 | Brown clay | 524 | 11 | Chalk and sand |
| 236 | 110 | „ „ Boulders | 525 | 1 | Flint |
| 240 | 4 | Clay | 544 | 19 | Flint and chalk |
| 250 | 10 | Quicksand | 545 | 1 | Flint |
| 259 | 9 | Clay and pebbles | 551 | 6 | Chalk |
| 279 | 20 | Clayey sand | 555 | 4 | Chalk and flint |
| 288 | 9 | Sandstone | 566 | 11 | Hard chalk |
| 290 | 2 | Flint | 651 | 85 | Light grey chalk |
| 302 | 12 | Sand | 691 | 40 | Sand and chalk |
| 305 | 3 | Flint pebbles | 716 | 25 | Chalk |
| 309 | 4 | Sand | 726 | 10 | Chalk & small flint |
| 311 | 2 | Flint | 750 | 24 | Grey chalk & marl |
| 313½ | 2½ | Lime | 752 | 2 | Sand |
| 315 | 1½ | Flint | 758 | 6 | Chalk |
| 318 | 3 | Hard rock | |||
| 320 | 2 | Flint | 762 | 4 | Micaceous streaks |
| 328 | 8 | Chalk and flint | 826 | 64 | Grey chalk & marl |
| 329 | 1 | Flint | 837 | 11 | Hard chalk |