SYNTHETIC DYESTUFFS AS MICROSCOPICAL STAINS

Stains Other Than Blood-Stains as Medico-Legal Evidence

On one point an important difference of opinion may exist between medico-legal workers: should a positive chemical test, in the absence of finding spermatozoa under the microscope, be accepted a& evidence of semen ? Some are in favour of doing so (Bagchi, 1937), others against (Owens, 1935; Thomas, 1937; Kamath, 1938; Glaister, 1938; McNally, 1939; Modi, 1940; Rhodes, 1940) and yet others appea...

The Preparation of Permanent Stained Microscopical Specimens of Erythrocytes from Old Blood Stains

fluid. Many different fluids have been employed for this purpose, the one we prefer being Vibert's fluid (Common salt 2 grammes, Mercury Perchloride 0.5 gramme, Distilled water 100 c.c.). The clot is soaked in a few drops of Vibert's fluid in a watch glass for twenty minutes, care being taken to avoid evaporation. Then a portion of the softened clot is gently teased and transferred to a slide b...

Pigments and Dyestuffs

Potentialities of Natural Dyestuffs as Antifeedants against Varied Carpet Beetle, Anthrenus verbasci

We studied damage to wool fabrics dyed with different natural and chemical dyestuffs by the larvae of varied carpet beetle, Anthrenus verbasci, as part of a study on the functions of natural dyestuffs. Eight of ten natural dyestuffs showed an antifeeding effect against A. verbasci. Strength of the antifeeding effect of natural dyestuffs in a feeding preference test was in the order lac dye, gal...

The binding of dyestuffs by proteins