The science of labour and its organization / by Josefa Ioteyko.

  • Józefa Joteyko
Date:
1919
Catalogue details

Licence: In copyright

Credit: The science of labour and its organization / by Josefa Ioteyko. Source: Wellcome Collection.

    30/214 page 18
    It is just the same with the form of the muscles, which, according to Haughton’s observations, is strictly adapted to the nature of the work to be done, such as the heart for example, where the complex arrangement of the muscular fibres renders them particularly suitable for utilization to the performance of the work required of that organ. W. Roux has likewise demonstrated the perfect harmony existing between the form of the muscles and the conditions of their work. The variations in the length of the fibres are adapted to the extent of the movements which the muscles have to make, and we see the muscular fibres extend themselves spontaneously when stretching to a part of their length, and vice versa. Marsy definitely solved this problem in the affirmative. Finally, Imbert cites the work done by de Chauveau, to whom was reserved the discovery of the first laws of muscular energy. His investi¬ gations having become classic, we will not recapi¬ tulate them here, but we must remember that they dealt chiefly with the evolution of the internal work of the muscles by virtue of the principle of Equivalence, which governs all transformations of energy. His experiments were carried out upon the flexors of the fore-arm in man, whose conditions of work vary according to circumstances.
    No text description is available for this image
    No text description is available for this image
    No text description is available for this image