Minutes of Proceedings. 
xiii 
discovered in South Africa over 30 years ago and has considerable 
economic importance in view of the mortality it causes among ostrich 
chicks, this is the first complete description of the helminth. It has been 
found that the parasite has a buccal cavity armed with teeth. This and 
other details were overlooked in the original description. 
3. " On the Interpretation of the Electrocardiogram," by W. A. Jolly. 
An explanation of the form of the Electrocardiogram in the human 
being, under normal and pathological conditions, was put forward, based 
on a study of the electrical changes in the simple and slowly contracting 
heart of the tortoise, isolated from the body and caused to beat by 
induction shocks. 
4. " On the Crystallography of Anatase Crystals in the Auriferous 
Conglomerate of the Witwatersrand," by W. von Bonde. (Communicated 
by Professor Young.) 
An occurrence of minute Anatase crystals in the Eose Deep Gold Mine 
was described recently by Dr. E. B. Young. A number of these minute 
crystals was sent to the S.A. College for crystallographic examination. 
This work was undertaken by the author. 
Chemical examination showed the presence of Titanuim in the mineral. 
There is, therefore, no doubt as to the correctness of Dr. E. B. Young's 
determination of the mineral as Anatase. 
A stereographic projection of all the observed faces suggests the 
possibility that Anatase has not the symmetry hitherto assigned to it. An 
extended examination of a larger number of crystals is in progress with a 
view to confirming or disproving this suggestion. 
5. " Note on the Product of a Special n-Yme Determinant by its 
Central Minor of the (7i-4)th Order," by Thomas Mum. 
In Mr. Eoseveare's paper on a proof that every algebraic equation of 
the nth degree had n roots, an equivalent was given for the product of a 
special w-line determinant by its central minor of the (7z-4)th order, the 
equivalent taking the form of an aggregate of products of pairs of minors 
of the {n-2)th order. For such a product an apparently similar expression 
of a general character has been known for some time, but it is found that 
this does not include the form given by Mr. Eoseveare. This latter form 
is considered and a generalization of it is worked out. 
Ordinary Monthly Meeting. 
Septe77iber 16, 1914. 
The President, Dr. L. Peringuey, was in the Chair. 
The Minutes of the Ordinary Meeting held on August 19th were 
confirmed. 
