ANNIVERSARY ADDRESS. ou 
contain particles of magnetite, thereby clearing up a point upon 
which doubt has existed, and is expressed in standard works on 
mineralogy. Bauerman in his Systematic Mineralogy for instance, 
says ‘“‘Chrome ore, iron and Franklinite are magnetic, but it is 
not certainly known whether this is a special property or is caused 
by finely interspersed magnetite.” 
In the Physiological Laboratory, Professor Anderson Stuart 
has added materially to our knowledge of human physiology and 
anatomy. During the past year he has published sixteen papers 
on these subjects. (1.) He has demonstrated conclusively—Pro- 
ceedings Royal Society—the presence of a membrane in front 
of the vitreous humour. The presence of this thin membrane 
has been alternately asserted and denied, and, finally, in recent | 
years, was given up by the best anatomists. The confirmation of 
its presence is important from the point of view of the operator 
upon the eye. (2.) He has also demonstrated that the suspensory 
ligament of the lens of the eye is merely cemented to the capsule 
of the lens and to the ciliary bodies—a fact of importance in our 
knowledge of the development of the eye.—DProceedings Royal 
Society. (3.) Also that the suspensory ligament of the lens is 
really composed of two portions, with very different connections 
and functions—and this demonstration does much to complete 
our knowledge of the mode in which the eye is accommodated for 
focus.—Proceedings Physiological Society. (4.) Also that in 
the periphery of the vitreous body there is a ring of fibrous 
tissue membranes, the main septa of which spring from the ciliary 
region of the hyaloid membrane, and pass backwards and inwards 
through the vitreous tissue, so that the suspensory ligament of 
the lens has an attachment not merely to the hyaloid membrane 
but through the fibrous septa practically to the whole of the 
vitreous. substance.—Proceedings Anatomical Society. He also 
tnade important contributions to the physiology of the larynx. 
With Dr. MacCormick he has shown, that in swallowing, the 
entrance to the air-passage is not closed by the epiglottis folding 
down as a lid.—Journal of Anatomy and Physiology. Also he 
