SCIENCE-GOSSIP. 



143 



last five in fruit. Hypmim elodes grows sparingly 

 by the Alt, and with it Hyptium fiUcinum, H. adunmm 

 forma * fulcatmn Renauld, and H. polygamum, in 

 fruit. In damp places Orchis incarnata and Epi- 

 pactis palustris abound, with occasionally Samohis 

 valerandi, and, in drier spots, Polygala oxyptera and 

 Cerastium tetrandrum, the latter now seeding. 



Crossing the sand dunes towards the beach, we 

 see *Tortula arenicola, now barely recognizable, 

 the fine yellow stellate cushions of spring having 

 become shrunk, blackened and hoary, and the plant 

 is evidently dormant. Passing through breast- 

 high marram and abundance of Euphorbia maritivia 



ARTESIAN WELL AT BOURN. 



"^"X T'E illustrate below the mouth of a remarkable 

 artesian well, which was bored by Messrs. 

 C. Isler and Co., of Bear Lane, Southwark, and 

 which overflowed from a depth of 120 feet from 

 the surface at the rate of 2,592,000 gallons, and 

 at 134 feet at the rate of 5,011,200 gallons per 

 diem. The boring ends in oolitic beds, and the 

 water is conveyed to Spalding by gravitation, a 

 distance of ten miles. Chalybeate water was found 

 at 65 feet 10 inches. This was safely excluded 

 by the driving of 13-inch pipes, and the main 



Artesian Well at Bourn. 



and E. portlandica, we find Cynoglossum vulgare, 

 and very rarely its var. *subglahyum, before we 

 reach the shore-line. Here A triplex babingtonii and 

 A. prostrafa, Sxieda maritima, Cakile maritima, Honc- 

 kenya peploides and several other strictly maritime 

 plants can only be glanced at, as unfortunately 

 time and trains wait for nobody. 



The majority of the objects mentioned are 

 abundant, and such as obtrude themselves on the 

 botanist's attention ; they may all be found with 

 but little search in such a ramble as I have 

 described, in this part of South-west Lancashire. 

 H. M. Prison, Liverpool ; July nth, 1898. 



springs were tapped at 78J feet, at the commence- 

 ment of oolitic limestone. The pressure at each 

 depth remained the same, viz., 10 lbs. to the square 

 inch. The following section was passed through : 

 Alluvial and Fen Beds, 9J feet ; Cornbrash, 6J feet ; 

 Great Oolite Series, 60 feet ; Lincolnshire Oolite, 

 58 feet, ending in a very hard oolitic limestone. 

 We are not aware of any well in this country 

 which has yielded a larger supply of water than 

 this one at Bourn, in Lincolnshire, the yield being 

 no less than 3,480 gallons per minute. 



E. A. Martin. 

 89, Bensham Manor Road, Thornton Heath. 



