Micrographic study of pathologic strokes

161

All these requirements are completely fulfilled by X-ray spectrometry. A report on some problems of analysis is given which shows the suitability of this method. Pounds, C. A. (Reading, THE ANALYSIS POISONING

OF

U.K.)

ARSENIC

IN

HAIR

FROM

FIVE

CASES

OF

ACUTE

ARSINE

Samples of hair from five victims of acute amine poisoning were analysed in centimetre sections for arsenic soon after exposure. For one of the victims the hair was analysed at four time intervals up to a total growth period of 5 - 6 months after exposure. The method of analysis is outlined and the significance of those results obtained is discussed with particular reference to the estimation of the date(s) of exposure(s) to amine. Pounds, C. A. (Reading, THE

SIGNIFICANCE

OF

U.K.) FIBRE

EXAMINATIONS

IN

FORENSIC

SCIENCE

The transference of fibres from knitted materials and their subsequent persistence on the surface of common articles of men’s outer clothing have been studied. From these results, mechanisms are suggested by which the fibres are transferred and retained. Also results are shown for the recovery of fibres from the outer surface of garments in laboratory examination using various searching techniques. The significance of such fibres recovered that match control samples is then discussed in the light of the above results. Priuli de Lisandi, MICROGRAPHIC

I. N. (Buenos Aires, Argentina) STUDY

OF

PATHOLOGIC

STROKES

Under my direction the examination of handwriting of persons suffering from neurological disorders was carried out. This was done by the systematic study of micrographs of segments or portions of strokes. Experiments were made with handwriting and signs written with pen and ink on similar paper. Each millimetre of the writing was examined under a powerful microscope. Purves, J. D. (Toronto, DENTAL

IDENTIFICATION

Canada) OF

FIRE

VICTIMS

Of all the cases requiring identification by dental means 60% resulted from fire of various sources. A discussion of some of the more pertinent features in providing a positive identification will be illustrated by three cases. The potential of dental expertise, utilized in greater depth by fire investigators, is explored. Radanov,

S. (Sofia, Bulgaria)

DIAGNOSTIC

IMPORTANCE

BY

STAINING

FUCHSIN

OF

MYOCARDIAL

NECROSIS

RECOGNIZED

The results of fuchsin staining of myocardial tissue in cases of sudden death due to coronary artery disease or due to violent death (mechanical asphyxia, electrocution, blunt injuries, poisoning by carbon monoxide, etc.) are compared. The diagnostic value of the results is evaluated.