Bioplasm : an introduction to the study of physiology & medicine / by Lionel S. Beale.

  • Beale Lionel S. (Lionel Smith), 1828-1906.
Date:
1872
Catalogue details

Licence: Public Domain Mark

Credit: Bioplasm : an introduction to the study of physiology & medicine / by Lionel S. Beale. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

    65/376 (page 45)
    to the fact, that the proportion of bioplasm in the same tissue varies at different ages, and that in many different forms of disease the morbid change essen- tially depends upon a considerable increase in the amount of bioplasm. These facts are most positively demonstrated in specimens prepared according to the method described. Moreover, I shall, by the aid of this mode of investigation, be able to show where the bioplasm ceases and the formed material commences, . and in some instances, to distinguish which part of a mass of bioplasm was first and which last formed. The action of the carmine fluid upon the bioplasm is well illustrated by a well-prejDared specimen of cartilao-e of the frog or newt. The cartilage tissue, matrix, or formed onaterial is left perfectly colourless, and although it consists of a firm, and not very per meable material, it has been freely traversed bv the carmme fluid. The rapidity with which a com paratively thick layer of the formed material mav be traversed by the dark red solution is very remark- able. To illustrate this fact, a few cells may be taken from the liver of a mouse recently killed The carmine fluid may be allowed just to pass over the cells, and the excess at once washed away with a little weak glycerine. The whole operation can be performed m less than half a minute, and yet the bioplasm of every cell, in this case called the nucleus wi be coloured bright red, while the outer formed part will be eft colourless and unchanged. The formed material in this instance consists of a thick layer of soft matter, which, however, has been freely traversed in the course of a few seconds by a fluid /hich contains glycerine, .and is of higher specific gravity than blood-serum.* This enables us to form^some idea of liquor ammonia J ,]r^,.Urr, , • •' gi^^'ns; strong