Volume 1

Animal chemistry : with reference to the physiology and pathology of man / by Franz Simon ; translated and edited by George E. Day.

  • Johann Franz Simon
Date:
1845-1846
Catalogue details

Licence: Public Domain Mark

Credit: Animal chemistry : with reference to the physiology and pathology of man / by Franz Simon ; translated and edited by George E. Day. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

    127/430 (page 103)
    These distinctions are sufficient to prevent them from being mistaken for blood-globules. Globules of oil may be immediately recognized by their well-defined dark edge, and by their great refractive power. They do not rotate, and are not granular, but perfectly transparent. The size of the blood-corpuscles varies in different animals. In man, the diameter varies, according to Wagner,^ from •0004 to -0002 of a French inch; according to Miiller,* from •00035 to -00023, and according to Schultz®, from -00036 to -00031. The thickness, according to the last observer, may be estimated at -000085 of the same measure. Of all the mammalia, the ruminants seem to possess the smallest blood-globules. Wagner has given the following proportions ; In man and monkeys g^th of a line = 3. Carnivora. . ^^th of a line = 4. Ruminantia . g^tli of a line = 5. In addition to these admeasurements, the following are de- serving of notice : Nasse fixed their average diameter at -00033, the maxima and minima being -00036 and -0003; Bowerbank places their average diameter at from -00035 to -00027, the extreme limits being -00054 and -00021 respectively; Owen at -00028; and Gulliver at -0003 of an inch. The dimensions of the blood-corpuscles in the following animals have been measured ; Ape (Simla callitrix) •00037'*^ (Prevost and Dumas). Cat -00028; dog -00031 (Scludtz); rat and mouse about •00025 (Wagner). Sheep -0002 (Schultz and Wagner); ox -0002 (Schultz) and •00024 (Wagner); goat -00017; chamois -0002 (Prevost and Dumas); horse -00031—-00027 (Schultz). According to Wag- ner, the diameter in rats, mice, hares, and squirrels, varies from -00025 to -00020. The blood-corpuscles of birds, fishes, and amphibia are el- liptical. The following are the results of some of the best authenticated measurements: Common fowl: length -00062 ; breadth -00036 ; thickness •00013 (Schultz). According to Dumas and Prevost, the long ' Nachtriige zur Pliysiologie dcs Blutcs, 18.^8, i>. 5. “ I’hysiologic dcs Mciisdicn, vid, ], p, lOfi. ^ System dcr Cirkulatioii, p. M. ’ French inches.