Blood stains in criminal trials / by Andrew Fleming.

  • Fleming, Andrew, 1830-1896.
Date:
1861
Catalogue details

Licence: Public Domain Mark

Credit: Blood stains in criminal trials / by Andrew Fleming. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    portion of 1 to 1.5, when at 15° Cent., the mass remains without change, or takes the consistence of an extract. Characteristics of the Blood of Animals. Ox Blood.—In operating as above described, the plas- ticity and coherence are found to be less. The mass which is reduced to clots—elastic, but hard and dry, when placed upon a plate of glass, shows no change whatever after thirty hours, either in summer or winter; preserves its form and diameter; neither assumes the consistence of an extract, nor reflects images; and after some weeks, loses its shape when the plate of glass is inclined, takes a darker colour, and alters in firmness so much that the clots become agglutinated, and form masses without con- sistence, and always granular, whence flows a portion of acid liquor. Pigeon Blood.—The powder of interposition does not mix with the acid liquor so as to form a homogeneous, plastic, and coherent paste; only a mass of hard and te- nacious clots is obtained, which, divided and without cohesion, after some days—aided by a temperature of 25° or 30° Cent.—reunite into a sticky, extractiform, and homogeneous mass. Green Lizard Blood.—This is with much more difficulty detached from tissues, than the blood of any other animal; whence the cause of the almost indelibility of the spots by water. The powder of interposition does not furnish a coherent and homogeneous mass, but only a pile of clots which do not adhere; at first slightly elastic, they become by degrees moist, flabby, and of a deep colour, afterwards take the brightness and appearance of a semi-