20 



barrel,* but had this remarkable peculiarity, that there were lines 

 — structural lines, a a a a — whose texture and colour were dif- 

 ferent from the general colour of the mass recognisable on such 

 points as b b b, between any two such structural lines. 



Fig 2. is an elevation of the stream of pitch, shewuig pretty 

 nearly the dimensions and outward appearance of the stream. The 

 striated slati/ structure appears here on the outside, as is more dis- 

 tinctly (intended to be) shewn in Fig. 3. There were certain well- 

 defined lines, and on either side of these for some little distance, 

 other small lines or cracks (but not open cracks or fissures), and then 

 a space of smooth glassy-looking pitch. 



I am strongly impressed with the idea, that the structural lines 

 are a result of the motion, and that they correspond with the veiTis 

 of glaciers. The lines incline most when the surface is steepest, as 

 at h, Fig. 3., and are very faint and nearly horizontal at t, where 

 the surface of the stream is nearly so too. I left Gateshead with- 

 out having an opportunity of getting a sectional view of this stream. 

 I can get no real Stockholm pitch in Glasgow, else I should have 

 made the experiment you have incited me to attempt here. I am, &c. 



Lewis Gordox. 

 To Professor Forbes. 



The following Candidates were duly elected Fellows of the 



Society : — 



Dr John Burt, F.R.C.P., Edinburgh. 



Dr Thomas Anderson, Lecturer on Chemistry. 



The following Donations were announced : — 



The Electrical Magazine, conducted by Mr Charles V. Walker, for 

 October 1844. — Bi/ the Editor. 



Memoir of Francis Baily, Esq., D.C.L., Oxford and Dublin. By 

 Sir John F. W. Herschel, Bart. — By the Royal Astronomi- 

 cal Society, 



Inest de Stella Lyrse variabili Disquisitio. Per F. G. A. Arge- 

 lander. — By the Royal Astronomical Society. 



Description of Bones, &c,, found near the River Ohio, 1786, with 

 an Engraving, and Observations on the Annual passage of 

 Herrings. By Mr John Gilpin. From the Columbian Ma- 

 gazine, December 1786. — Anonymous. 



Three Volumes in the Chinese Character on Astronomy and Geo- 

 graphy. — By Professor Forbes. 



* The pitch is fragile at the same time that it flows. — L.G. 



