418 PROCEEDINGS OF THE 



Mr. Nelson also sent for exhibition a photograph of a new 

 slide, designed by Mr. G. Nelson, for the portable Greenough, to 

 hold three pairs of objectives. It allows the powers to be changed 

 by moving the slide forward, and, in brief, is for the Greenough 

 what a rotating nosepiece is for an ordinary microscope. 



At the 500th ordinary meeting of the Club, held on June 23rd, 

 1914, the Vice-President, Mr. E. J. Spitta, L.R.C.P., M.R.C.S., 

 in the chair, the minutes of the meeting held on May 26th were 

 read and confirmed. 



Messrs. Geoffrey Norman, Charles James Reeves King, William 

 Henry Scott, Charles Worthington Hawksley, Martin Herbert 

 Oldershaw and Edmund John Weston were balloted for and duly 

 elected members of the Club. 



The list of donations to the Club was read and the thanks of 

 the members voted to the donors. 



Mr. Watson Baker, jun., read a short paper describing a 

 series of sections of fossils from the Coal Measures. Many of 

 these were not only rare, but were almost unique in the beautiful 

 manner in which they showed the various structures, both of 

 plants and animals. They were exhibited under a number of 

 microscopes, lent and arranged for the occasion by Messrs. 

 Watson & Son. There were on view, also, whole specimens 

 still attached to the rock in which they were found. Mr. Watson 

 Baker said the specimens had been sent to him by a well-known 

 authority on palaeo-botany, and as many of them were of unusual 

 merit, he thought the Club would like to see them. He then 

 gave an interesting description in some detail : a condensed account 

 is as follows : No. 1. A specimen of the lower jaw of Elonicthys, 

 with teeth in situ. No. 2. Flank scales from the same. Elonic- 

 thys is a genus of fishes having a bony armour or a skeleton. 

 Devonian and Carboniferous, they existed in large numbers and 

 great variety, some attaining a great size. No. 3. A specimen of 

 the Caeleanthidae (hollow-spined fishes), which range from the 

 Upper Devonian to the Chalk. Specimens of these in situ were 

 on the table. Nos. 4 and 5 were sections of teeth of species of 

 shark, Diplodus equilateralis and D. gibbosus ; also an uncut 

 example of one of the teeth. Nos. 6 and 7. Sections of coal from 

 Mossfield Colliery, Longton, showing various vegetable tissues. 



