Ironstone Mine. — By the kindness of the owners the members of the 
Union have permission to visit the Spawood Ironstone Mine on Monday, the 20th. 
The manager, Wm. Charlton, Esq., will conduct visitors over the workings. Any- 
one desiring to avail themselves of the privilege should advise the Divisional Hon. 
Sec, by letter, so that he may make the necessary arrangements. 
PERMISSION to visit their properties has been kindly granted by Miss 
Staveley and Captain R. B. Turton. 
GEOLOGY. — The Geological Section will be officially represented by 
Mr. Cosmo Johns, F.G.S., its President. 
Dr. W. Y. Veitch writes : — Middle Oolite (Kellaways Rock) is exposed on the 
Guisborough Moor, near Gerrick, a little over three miles S.E. of that town. With 
the exception of Hob Hill near Saltburn, which rises no higher than tiie Upper 
Lias, all the surrounding hills are capped with Lower Oolite, below which is the 
Dogger. Guisborough itself is built upon the Middle Lias, and is the centre of a 
large ironstone mining industry. Formerly its chief source of revenue was from the 
manufacture of alum, from alum shale [A. conivntnis zone), and occasionally from 
jet rock {A. serpejitinus zone). The ironstone is obtained from the spinatus zone 
of the Middle Lias. At Eston the beds measure 24-feet, with ironstone 15-feet 
2-inches in thickness. From this point the ironstone becomes inferior in quality, 
the seam becomes split up with interlying bands of shale. At Ayton there is 
•exposed the most interesting feature ol the district, that is the Cleveland Whin 
Dyke. Here it is 80-feet thick at the base of the hill (Roseberry Topping), whilst 
at the surface exposure at ai height of 350-feet it is only 20-feet thick. The dyke is 
first noticed at Sneaton High Moor and extends in a fairly straight direction to 
Coalham Beck near Stockton, crossing the Tees at Eaglesclift'e. It is an augite 
andesite (see Teall's British Petrography). Roseberry Topping is typical of the 
■neighbouring hills, excepting for the absence of the Dogger. Both it and Hob Hill 
are out-lyers, Roseberry is 1,057-feet high, and Captain Cook's Monument, Easby 
Moor, 1,064- feet. The top of Roseberry is a mass of Oolite, followed by zones 
of A. comminiis, serpeniinus, annulalus^ spinatus^ margaritaius^ capricornus^ and 
javiesoni, upon which the village of Newton rests. 
Glacial Phenomena. — This has been fullv dealt with wi*^h by Professor 
Kendall. 
Mr. Frank Elgee writes : — At Bold Venture, at 800 feet, occur gravel mounds 
with Cheviot Porphyrites, indicating a glacier lake overflow down Sleddale. 
Erratics are even found on Newton Moor at a height of 1,000 feet. When the ice 
began to retreat a small lake was held up in High Bonsdale, the overflow falling 
westward at 675 feet. As the ice melted backward a great overflow out of the 
Boosbeck Valley into the Guisborough valley was initiated, forming the Slapwath 
Gorge (600-425). The whole of the Vale of Guisborough is covered with drift 
which must be of great thickness. As the ice melted from the Guisborough Valley 
the melting front initiated two channels. The westerly one is near Nofmanby 
Intake Plantation, and perhaps leads from the head of Moordale. Its intake level 
is 625 feet, but it cuts through the 650 feet contour. The second is the grand 
gorge of Scugdale Slack, certainly as fine a piece of glacial erosion as can be found 
in Cleveland. It contains little or no stream, and the intake level is 523 feet, 
cutting clean through the hill where it is about 50 feet deep. It rapidly becomes 
deeper and steeper until where it emerges into the Guisborough Valley it is about 
200 feet deep. From its outflow a wide flat-floored trench in the drift can be seen 
sweeping down the valley to the westward between Grove Hill and Windy Hill. I 
have traced it as far as Lowcross House. It is about 25 feet deep near the 
Chaloner Pit Railway. 
BOTANY. — The Botanical Section will be officially represented. 
Flowering Plants.— Mr. J. G. Baker, F.R.S., F.L.S., writes :— The district 
is not rich in rare phanerogamia, the hills are not high enough to produce many 
boreal species. There is no limestone, and the sandstone of the hill-top, and the 
shales, and ironstone of the hill-slopes, do not favour the growth of the southern 
types. Newton Wood, on the outer flank of Roseberry Topping, is the original 
Station for Rosa hibernica var. glabra Baker, which is regarded by Crepin as a 
natural hybrid between R. spinosissima and R. canina. Trienialis europcea, was 
gathered by Ray on Freeburgh Hill, 250 years ago, and is not uncommon in liaysdale. 
The best walk is along the slope of the Hill under Highclifl"e, and through the 
Ilutton Locras Plantations to Roseberry Topping, dropping down to Ayton 
Station, and returning to Guisborough by way of Newton. Along these hill-slopes 
grows Geraniitm sylvaticum, Riibus selmeri, R. newbouldii, Hieracium tridentatum, 
Juniperiis co?n?nunis and Cephalanihera ensifolia. A branch of Sledale grows 
Hypericicm elodes, Myriophylln?)i verticillaturn, Scirptis paucifiorus and Carex 
leretiuscula, Narcissus incofuparabilis is naturalised in a field near Guisborough 
