LEEDS CHEMISTS’ ASSOCIATION. 
525 
come the knowledge that no power in the world, Gallic, Teutonic, or Sclavonic, shall 
outstrip this Anglo-Saxon race, which, like the dew of heaven, is falling upon all the 
face of the earth. 
A hearty vote of thanks was passed to Mr. Sharp for his instructive and interesting 
paper, and the meeting closed. 
LEEDS CHEMISTS’ ASSOCIATION. 
The Seventh Meeting of the Session was held at the Philosophical Hall on the even¬ 
ing of April 8 ; the President, Mr. Reynolds, in the chair. 
The meeting first considered the effect upon the interests of its members that would 
follow the passing of clause 15 of the Railways Regulation Bill, now before the House 
of Lords, and it was unanimously and strongly condemned. The following resolution 
was passed:—“That clause 15 of the Railways Regulation Bill, now before Parliament, 
would have the effect of giving to railway companies an unjust monopoly in carrying 
small parcels, and cause great annoyance and loss to members of this Association. 
That copies of this resolution be sent to the Members for the Borough, and that the 
Committee be requested to watch the progress of the Bill.” 
Moved by Mr. Thompson, seconded by Mr. S. Taylor. 
The Hon. Secretary, Mr. Yewdall, having read the notice issued by the Executive 
Committee of the General Medical Council, ordering the exclusive use of the British 
Pharmacopoeia (1867) by all dispensers, the question was discussed. The feeling of the 
meeting was embodied in the following resolution :—“ That the notice issued by the 
General Medical Council as to the exclusive use of the British Pharmacopoeia (1867) 
having been brought before the Association, and it being known that some prescribing 
physicians and surgeons in Leeds still adhere to older formulae, the Committee is re¬ 
quested to ask such prescribers either to indicate upon each prescription the particular 
Pharmacopoeia which they wish to be followed, or to give general instructions that may 
be communicated to the members of the Association. Subject to this inquiry the Asso¬ 
ciation recognizes the propriety and importance of the course urged by the General 
Medical Council.” 
Moved by Mr. Abbott, seconded by Mr. Freshfield Reynolds. 
The subject of the evening, as announced on the lecture card, was the exhibition of 
illustrations of Microscopic Crystallography, and Mr. James Abbott introduced this by 
an appropriate description of the labours of Dr. Guy and Mr. Waddington, explaining 
the conditions that had given the best results in his own experience, which had been 
large. Several microscopes were provided, and a large number of microscopic slides, 
chiefly of sublimates, were contributed by Mr. Waddington, of London, Mr. Severs, of 
Kendal, Messrs. Abbott, Yewdall, and Jackson, of Leeds, whilst Mr. Ellwood, of Bir¬ 
mingham, sent photographs of microscopic crystals. The exhibition excited much 
interest, and the cordial thanks of the meeting were voted to the gentlemen named. 
ORIGINAL AND EXTRACTED ARTICLES. 
ON RECENT CHANGES IN CHEMICAL NOTATION AND 
ATOMIC WEIGHTS. 
BY WILLIAM A. TILDEN, F.C.S., DEMONSTRATOR IN THE LABORATORY OF 
THE PHARMACEUTICAL SOCIETY. 
Chemistry, like other sciences to which mathematical principles have not 
been applied, furnishes an example of the effects which follow from a want 
of uniformity of opinion with reference to the axioms from which it is neces¬ 
sary to set out. It is even now, after a century of labour, a great heap of 
facts confused with hypotheses, presenting hardly so much of real system as 
entitles it to the place and dignity of a science. 
