Microscopic examination of blood : and vegetations found in variola, vaccina, and typhoid fever / by J.H. Salisbury.

  • Salisbury, James Henry, 1823-1905.
Date:
1868
Catalogue details

Licence: Public Domain Mark

Credit: Microscopic examination of blood : and vegetations found in variola, vaccina, and typhoid fever / by J.H. Salisbury. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    A drop of blood may frequently be explored for an uour or more with profit. If the case is obscure, and he first drop examined fails to throw light, explore an- other carefully. If you still fail, continue the search ;ill you are perfectly satisfied that the cause is to be .nought for somewhere else. Often much may be learned oy allowing the blood to stand for from a few hours to wo or three days between the slides, watching from rime to time the successive changes taking place during i:he process of drying. These changes, compared with :hose taking place, under similar circumstances, in nealthy blood, often throw valuable light upon certain peculiarities of the case. The following is a list in detail of some of the con- ditions^ states, and pathological products to be sought For in blood : 1, Color of blood to the unaided eye and under the microscope. 2, Consistence of the blood. 3, Rapidity of clotting. 4, Serum in normal proportion. 5, ’Colored corpuscles in normal proportion. 6, Colorless corpuscles in normal proportion. 7, Fibrin in normal proportion. 8, Serum in too small quantity. 9, Colored corpuscles in too small quantity, 10. Colorless corpuscles in too small quantity. 11. Fibrin in too small quantity.' i 12. Serum in too large proportion. 13. Colored corpuscles in too large proportion. 14. Colorless corpuscles in too large proportion. 15. Fibrin in too large proportion. 16. Colored corpuscles of normal consistence. 17. Colored corpuscles too soft, plastic and sticky, adhering together -and being drawn out into thread-like prolongations as they separate. 18. Colorless corpuscles, normal in quantity, but so sticky and plas-