Elements of pathological anatomy . easily broken down by boiling. Exposed to destructive analysis, it yieldsoxygen, hydrogen, carbon, and azote. The cellular substance is every wherelubricated by a thin watery fluid, the presence of which is essential to the dueexercise of its healthy functions ; it is of an albuminous nature, and identicalwith the serum of the blood, whence it is derived. Llxamined in reference to its structure (Fig. 48), this tissue is found to be composed of whitish fila-Fig. 48. ments, homogeneous, soft, and transparent, which in-tersect each other in all di-rections, form
Elements of pathological anatomy . easily broken down by boiling. Exposed to destructive analysis, it yieldsoxygen, hydrogen, carbon, and azote. The cellular substance is every wherelubricated by a thin watery fluid, the presence of which is essential to the dueexercise of its healthy functions ; it is of an albuminous nature, and identicalwith the serum of the blood, whence it is derived. Llxamined in reference to its structure (Fig. 48), this tissue is found to be composed of whitish fila-Fig. 48. ments, homogeneous, soft, and transparent, which in-tersect each other in all di-rections, forming thereby amultitude of cells whichfreely communicate togetherover the entire body. Ofthe many proofs that mightbe adduced in illustration ofthe truth of this position, itwill suffice to mention thatfluids introduced at one pointcan be readily forced to an-other, however remotely situ-ated, [n anasarca, the effused water always gravitates towards the mostdepending part of the limb, where it may be readily discharged by slightly. ORGANIZATION. 195 puncturing the skin. On the same principle, the air in emphysema frequentlyextends over the whole body, elevating the integuments into a soft, irregularswelling, which emits a peculiar crackling noise on pressure. All these areso many circumstances demonstrating the direct continuity of the cells of thesubstance in question. In their shape, the meshes of the cellular substance are too variable toenable us to express any definite opinion respecting it. In some situations,they appear to be of an oval form ; in others, they are rounded ; in others,cylindrical ; in others, angular. In most parts, these figures occur in a stateof combination. Equally variable are the dimensions of these cavities. Inthe normal state, they are quite small, so much so, indeed, that some writershave been induced to deny their existence ; but, in certain pathological states,they often acquire a considerable magnitude. The cells can be easily demon-strated by i
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