1819 -1 Scientific Intelligence. 149 



The spring is situated, as I understand, about midway between 

 Newhaven and Rottmgdean, at an elevation of about 15 or 16 

 feet above the leve lot the sea at high water mark. It issue* 

 from between the chfts or fissures of the chalk in small streams, 



Z \tT '* 7 S mt u ed ' p ? ur forth about 20 t0 25 g* 11 ™ 8 ™ 



the hour the chalk about the place is every where tinged with 

 ochrous deposit. Its temperature, as it issues, is 65° Fahr.Tnd 

 remains constantly the same. When I received it, there was 

 L n?Si °f brow T sh colou /> which P^ved on examination to 

 p,° r X1 : 0f , ir °?- ** s . s P eci L fic g^vity, at the temperature of 60° 

 Fahr was 1-076 ; it is slightly acidulous, changing the colour 

 of litmus paper both before and after boiling, by which opera^ 

 tion it deposits a further portion of oxide & irL, and To a 

 in solution gentS sh ° W ll to contain the blowing substances 



Oxide of iron. ■ £,i me 



^ Iumina - TJ Carbonic acid. 



Muriatic acid. Soda. 



Sulphuric acid. 



This last substance I will not be quite certain of- but I exvect 

 shortly to be able to make a more 4 perfect analysis and to £ ve 



as Iexne a oTr nt ° f ;V S si ' uatio \^<* is of Some importance! 

 as 1 expect it is not far distant from the spot where the native 

 alumina or subsulphate is found. I remam, dear Sir, 



Very sincerely, yours, 



John Thomas Cooper. 



X. Vindication of the Description of the horizontal Moon given 

 by Dr. Clarke in his Travels. 



(To Dr. Thomson.) 

 SIR, 



AriarfnrT^t who , sl >' ns hims ^f S. in the number of you. 

 Annals for June, has called upon Dr. E. D. Clarke to explain a 



HKP ' It " tW 18 "S* a PP earS t0 him t0 involve\n P aa7o S 

 ance y of thV / m ^ h,ch a descri P tio " * given of the appear- 



f^toKi^ X °Tl!i mO0n! asobservedon th * road PP from 

 101 nea to Kiemi. lhe moon appearing to be of an oval form is 



there said to have been observed as if it had been surrounded by 



rfrfoSf; f \ ?" bute8 t0 the accideQt ^ position of a body 



arounrl tL - 8 ^ 8 . Were " Col,ected *■ the form of a ring 



tCk a ii * w ,0H : HaV 1 mg USed this word form, one would 



ev denSv Sfr^n X ^ *""** d0ne ^ 5 as the description 

 c^l^iv^ a PP earance a » d not to a reality; but your 



undertake ^ '? ™ "*# W ' t0 be intend * d ' g rave, y 



.dicrou S ?„« r /° Ve ?* l ^ 09si ¥ U ^i and this surely is too 

 Juaicrous to merit any further notice. X 



