580 MR. H. BOLTON, F.R.s.E., ON [June, 1904. 



miners than the mass of varied terms used at present. 

 Before proceeding further, I must express the warm thanks 

 which I owe and feel to many members of the Manchester 

 Geological Society whose generous help made my work 

 possible. 



To Mr. Mark Stirrup, F.Gr.S., I and others owe very much 

 because of his earnest insistence for many years upon the 

 necessity for systematic fossil collecting. His efforts bore fruit 

 during the presidency of the late Mr. James Tonge, F.G.S., 

 when the latter with a number of members including Messrs. 

 Atherton, Jones, Howell, Kearsley, Grundy, Mehers, Walls, 

 and Barton, diligently collected a large series of specimens 

 of plant and animal fossils which were presented to the 

 Manchester Museum. 



About the same time, Messrs. Cairns, Grundy and Moss, 

 of Ashton-under-Lyne, generously gave me access to their 

 collections, and also gave a valuable series to the Manchester 

 Museum. 



The gift of the Kay-Shuttle worth collection, and the 

 purchase of the Wild collection made, with those already 

 mentioned and the previously large nucleus at the Owens 

 College, an assemblage of Middle Coal Measure forms never 

 before equalled. The main bulk of my notes were made 

 when classifying, identifying and arranging these collections, 

 and for the opportunity to do this, I must record my deep 

 indebtedness to Prof. W. Boyd Dawkins, Dr. W. E. Hoyle, 

 and the Council of the Manchester Museum.* To these, I 

 added as opportunity served, notes of the specimens in 



* Whilst these notes have been passing through the press, I have received 

 the assistance of Mr. S. S. Piatt, F.G.S., of Mr. W. Baldwin, F.CJ.S., who 

 has added several notes of fossils found by him and Mr. W. H. SutclifFe, 

 F.G.S., at Sparth Bottoms, Kochdale, of Mr. John Gerrard, H.M.I.M., who 

 has paid considrable attention to the sinking at the Bradford Colliery, 

 Manchester, and of Mr. W. Saint, H. M.I.M., who has devoted a considerable 

 amount of time and labour to work connected with this paper. 



