SOO Mr Galbraith on the Geographical Position of 



No. 1 — 18, Wahlenberg, Gilbert's Annal. v. xli. p. 113. and fol. 



No. 19 and 20, Berghaus's Hertha, Jan. 1829, v. xiii. p. 20. Spring 19 rises out 

 of a bed of pyrites, and is situated 337 feet above the level of the sea. No. 20, 

 which rises out of clay, lies 264 feet above the sea. 



No. 21, Erman jun., Poggend. Ann. v.fxi. p. 297tand fol. The temperatures 

 signed • are found by the interpolation. 



No. 22, Wahlenberg, loco cit. p. 160. Erman sen. (see Abhandlungen der Kon. 

 Acad. d.W. in Berlin for 1818—1819, p. 377 and fol.) observes that Wahlen. 

 berg's scale of variations in the temperature of this spring remained the same 

 during several years. According to him its mean is 45°.66. 



No. 23 — 29, Erman sen. as above. 

 F No.fSO — 33, Brandes die Mineralquellen, &c. zu Meinberg, Lemgo 1832, p. 271, 

 293, 306, and 317. 



No. 34 — 39, communicated by M. v. Lilian, Director of the Salt Works at Werl. 



No. 40, communicated by Prof. Benzenberg in Dusseldorf. 



No. 41 — 49, observ. of the author. 



No. 50, communicated by M. Wagner, Surveyor of Aix-la-Chapelle. 



No. 51 — 58, Abhandlung Uber die Warme der Erde in Basel, von Merian. 

 Basel, 1823. 



No. 59 — 75, According to the communication of Prof. PlieningerinStutgardt.' 



Remarks on the Geographical Position of some Points on the 

 West Coast of Scotland. By William Galbraith, M.A., 

 Teacher of Mathematics, Edinburgh, M. S. A. Communi- 

 cated by the Society of Arts. + 



Having for some years past been in the habit of visiting 

 several points on the west toast of Scotland, I employed my 

 leisure hours occasionally in determining their latitudes and 

 longitudes, and was often forcibly struck with the wide devia- 

 tion from the truth which many of them exhibited. 



It is true, I was told when I made a few remarks on this 

 subject before the Society of Arts last year, that errors were 

 known to exist in our best maps and charts, and that the late 

 Dr MacCulloch advanced their imperfections as a reason for de- 

 laying the publication of his researches, said to be intended for 

 the basis of a geological survey of Scotland. It is indeed easy 

 to charge most maps with errors, but it is not quite so easy to 

 shew their extent and to correct them ; at least I am not aware 

 that Dr MacCulloch did this in any great degree, which, from 

 the time he might have employed, by means of the funds placed 



* For the reductions of the degrees to the scale of Fahrenheit in the Me- 

 moir of Bischof, I am indebted to Mr George Atkin, author of the useful 

 Thermometrical and Barometrical Tables, published by Messrs A. & C. Black, 

 Edinburgh. 



+ Read before the Society of Arts, January 10. 1838. 



