OS' Carboniferous vegetation in Yorkshire.” 
5 
splendid example did not suffer the usual fate of these specimens by 
being broken up for rockeries ; but was eventually purchased by 
Professor Williamson for Owen’s College. Manchester, where it now 
is. When removed from its bed, it was found to weigh about five 
tons—truly a startling weight for a single specimen of a Yorkshire 
carboniferous fossil. It may be said that this was the fossil which the 
writer had the honour to describe in a paper read before the Geo¬ 
logical Section of the British Association at the meeting in September, 
1886, at Birmingham. The paper was well received, and the discovery 
was much appreciated by the President of the Association (Sir Wm. 
Dawson), Dr. Woodward (British Museum), Professors Williamson, 
Hull, Lebour, Lapwortli, and other eminent geologists. Dr. W oodward 
was pleased to say that, apart from the discovery itself, this event proved 
the inestimable value of local scientific societies such as the Leeds 
Geological Association, as it was almost a certainty that but for the 
work of the latter this specimen would never have been heard of. 
Such remarks from one of the great masters of science should encourage 
our members, and stimulate them to renewed exertions. In justice I 
must add that my friend, Mr. C. Brownridge, F.G.S., materially added 
to the success of my paper by furnishing me with a plan of the roots 
he had carefully drawn, one-fifth the size, coloured and shaded ; this 
was hung in the Council Chamber at Birmingham, and excited great 
admiration. This plan is now with Professor Williamson, at Man¬ 
chester, for permanent reproduction. The fame which this now 
celebrated tree had achieved put Yorkshire quarry owners thoroughly 
on the qui vive, and it was not surprising that, some little while after, 
a second example of some colossal fossil roots Avas reported to me, and 
along with my friends Mr. C. Brownridge, F.G.S., and Mr. Hoffman 
Wood, F.G.S., I visited the scene of the discovery. This was again at 
the Fall Top Quarry, Clayton, but in a part worked by Messrs. Briggs 
and Shepherd. They have only partially bared if, further progress 
being at a standstill until a road is diverted. Being in near proximity 
to the former example, it is of course in the same geological horizon, 
and the remarks upon the strata will apply also in this case. In order 
that a comparison might be instituted between this and the former 
discovery, the following measurements of the second fossil roots were 
carefully made by the gentlemen above named. The diameter of the 
area, bared at the time of the visit, was from north to south twenty 
feet, and from east to west twenty-two feet four inches, or a superficial 
area of four hundred and forty-six feet. There arc eight roots again 
in this example, some not yet bared very far, and all those exposed arc 
