DUBLIN MICROSCOPICAL CLUB. 
113 
Alga? quam paradoxa! of Harvey was not a synonym thereof, 
and this latter, a mass of semi-confused congeries of green (phyco- 
chromaceous r) cells, was still to be described. 
Section of Larynx of Human Foetus, exhibited. — Mr. B. Wills 
Bichardson exhibited with a Quekett’s dissecting microscope and 
one of Charles Baker’s 2-inch objectives only, so that the whole of 
the object might be seen, a cross section of the larynx of a nine 
months humaa foetus. In the specimen the most striking 
structures were (1) sections of the thyroid and the arytenoid 
cartilages ; (2} the laryngeal pouches ; (8) the pharynx ; (4) 
portions of some of the intrinsic muscles of the larynx ; (5) the 
laryngeal columnar epithelium ; and (6) mucous glands. 
The specimen was a triple staining made with carmine, picric 
acid, and macder, the latter being an excellent medium for 
staining cartilage cells, their nuclei and nucleoli. 
The section was a striking illustration of the great assistance 
that may be derived from the use of the freezing microtome in 
minute anatomical research, for it is difficult to conceive that so 
even a section could be made without the greatest difficulty by 
any other methods with which we were familiar. Moreover, 
Mr. Richardscn observed that scarcely a bit of the larynx was 
wasted, as he succeeded without any trouble in cutting the whole 
of it, the tenuity of all the sections being about the same as the 
one he exhibited. It was mounted in Klein’s dammar solution. 
Cross secticn of the spine of Toxopneustes variegatus (Larnk.) 
was shown ly Mr. Mackintosh, wffio called attention to the 
differences mticeable between it and the spine of T. maculatus, 
A. Agass. : tlese are chiefly the lesser extent of epithelium in the 
former, the nore gradual increase in size of the solid wedges and 
the marked igure-of-8 shape of the peripheral wedges, those of 
T. maculatush^mg oval. 
Mr. Archer announced that the Boyal Microscopical Society of 
London had done the Club the honour to “ nominate it under 
the bye-law relating to ex officio Fellows, and the same having 
been approved of by a Gieueral Meeting, its President for the 
time being is entitled to the privileges of an ex off do Fellow of 
the Society;” and it was resolved that the marked thanks of this 
Club be mmmunicated through the Secretary of the Royal 
Microscopcal Society to that body for the distinguished honour 
thus confured. 
19M June, 1879. 
The shted meeting appointed for above evening was not held 
owing tc the very sudden and much-lamented death of Dr. David 
Moore, F.L.S., M.R.I.A., Director of the Botanic Gardens, 
Glasnevn, for many years a highly esteemed member of the 
Club. 
VOL XX. Ni:w SER. 
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