WITH THE YORKSHIRE COAL-FIELD. 
115 
the great lights with the exception of Hershell and Sedgwick are 
absent, and there is no want of most interesting matter for the con- 
sideration of the section. Professor Johnston read his paper on 
Organic Chemisty, Part. I, which we had enjoyed at Sheffield, and 
was highly complimented on it, and a very interesting discussion 
followed. There was also on Saturday an exhibition of maps and 
models that was full of interest, unfortunately I was obliged to leave 
the section before it was finished, and before the question of 
uniformity of scales came on, and none of our society were present 
besides myself, they having all joined the geological trip to Arran. 
I have not yet seen Dr. Buckland, as I waited for Mr. Sopwith's 
instructions, and he has not arrived. Mr. Greenough cannot yet say 
whether he can come to our meeting or not. The next meeting of 
the Association is to be at Plymouth. 
I am, my dear Sir, yours sincerely, 
Thomas Wilson. 
Those taking part in the excursion met at the time appointed, 
and after partaking of breakfast at the Strafford Arms, Wakefield, at 
7 a.m., the party set off in their " one-horse chaise," and had a 
good day's geologizing along the line, the cuttings were examined and 
notes taken. The excursion led to the desire that the works should 
be measured and reduced to scale, and in October Mr. Embleton was 
requested to obtain the services of some competent surveyor, and ten 
guineas were placed at his disposal for the purpose. A request pre- 
ferred to Mr. H. J. Morton was declined. 
Subsequently the services of Mr. Bull were secured, and sections 
of the cuttings on the railway exposed between Hebden Bridge and 
Normanton were obtained. 
At the meeting of the British Association at Glasgow in 1840, 
which was attended by representatives of this Society, a committee 
was appointed for the purpose of collecting and preserving a regular 
series of sections of railway cuttings, which, by their intersection of 
mineral districts or of rocks presenting any remarkable geological 
features, may afford useful information, and be worthy of being kept 
as geological and mining records, and a sum of £200 was placed at 
the disposal of the committee. This committee in due course pre- 
