458 
LEEDS CHEMISTS’ ASSOCIATION. 
The cylinders for receiving the blood are of glass, about an inch in diameter, and 
capable of bolding two ounces of blood. They are fitted with a cork piston with a 
steel rod, which can be elevated by means of a screw. As soon as the incision has 
been made, one of the glass cylinders is to be applied, and the air exhausted by ele¬ 
vating the piston, when the vacuum is supplied by blood drawn from the wound. 
From a single incision as much as form ounces of blood may be removed. 
This instrument possessed advantages over the ordinary cupping-instrument, inas¬ 
much as it may be applied to many situations where the other cannot, as the amount 
of flat or plane surface required is much less. It is not so painful an application, and 
the resulting cicatrix is less. Over leeches it possesses the advantage of abstracting 
blood much more rapidly and also more certainly. It is well known that the effects 
produced by the abstraction of blood are most readily obtained (and at least sacrifice 
of blood) when it is rabidly removed. The only disadvantage this and all other 
instruments labour under, when compared with leeches, is that an experienced operator 
is required ; whereas if the patient cannot apply the leeches himself, there is seldom 
much difficulty in getting some old wife to do so. 
Dr. Eobertson’s attention had been directed to this instrument while on the Conti¬ 
nent, where he had seen it much employed by oculists and surgeons in general. He 
had often seen great benefit result from its use in deep inflammatory affections of 
the eye. 
In this country public and professional opinion was so much opposed to depletion 
in any form, that an instrument to effect even the local abstraction of blood might be 
looked upon as devoid of interest; but in the event of blood-letting becoming as com¬ 
mon here as it once was, this instrument might be of great service. 
The name of the instrument in Berlin, where it is made, is the Hertelov/pe^ so called 
from the inventor and first maker of the apparatus. 
The instrument was very much admired, and as Dr. E. had an opportunity of con¬ 
trasting the old French mechanical leech, the superiority of the one Dr. E. exhibited 
was made very apparent. Thanks proposed by the President were very cordially 
awarded to Dr. Eobertson. 
j Edinburgh, Feb. 23, 1866. 
PROVINCIAL TRANSACTIONS. 
LEEDS CHEMISTS’ ASSOCIATION. 
The fifth meeting of the Session was held at the Philosophical Hall, on the evening 
of Wednesday, February 14, 1866; Mr. Edward Thompson in the chair. 
Messrs. Kingerlee and Theobald were elected associates. 
James Holroyd, Esq., exhibited by the oxyhydrogen light projected images of the 
beautiful photo-micrographs taken by Dr. Maddox; also Mr. Haes’s photographs of 
animals in the Zoological Gardens, Eegent’s Park. Mr. Holroyd added to the interest 
of the exhibition by introducing and explaining the construction of the lantern used for 
exhibiting opaque objects, instead of the prepared transparent slides. 
Mr. E. H. Davis, of Harrogate, a Corresponding Member, read a paper entitled, “ The 
Imperial Saline Ferruginous Well at Harrogate (formerly called the Cheltenham Saline 
Chalybeate Well), its History and Analyses. 
The following is an abstract of the paper:—This saline chalybeate water, and also the 
pure chalybeate, were discovered in November, 1818. Dr. Hunter gives the following 
interesting account of their discoveryf :—“ The two springs were discovered by boring in 
search of sulphur water to supply the increased demand for the baths. The alluvial 
earth having been removed, a stratum of clay presented itself, beneath which lay a bed 
of sand, and this was found to cover a dark bluish aluminous earth, from under which 
the water issued. Three borings were made, each to the depth of eight yards, the first 
and third in the lowest part of the valley, and a few yards distant from the fence ad¬ 
joining the road. 
* It is in this water protochloride of iron and chloride of barium have been recently dis¬ 
covered. 
f c An Essay on Two Mineral Springs recently discovered at Harrogate,’ by Adam Hunter, 
M.D., F.E.M.S.E. 1819. 
