. The American journal of anatomy. haken to loosen and removethe cells show the fibrillated membranesbut none of the homogeneous type. Thisis true of the ducts as well as the these preparations are treated ,^ HCl or ^o KOH the reticulatedmembranes swell and become clear andthe individual fibrils can usually be seenwith the immersion lens. In this description there has been asomewhat loose use of the term syncy-tium, for even where the cells of the em-bryonic connective tissue have becomeseparated and obtained their individuality, the word has in many casesbeen employed. It
. The American journal of anatomy. haken to loosen and removethe cells show the fibrillated membranesbut none of the homogeneous type. Thisis true of the ducts as well as the these preparations are treated ,^ HCl or ^o KOH the reticulatedmembranes swell and become clear andthe individual fibrils can usually be seenwith the immersion lens. In this description there has been asomewhat loose use of the term syncy-tium, for even where the cells of the em-bryonic connective tissue have becomeseparated and obtained their individuality, the word has in many casesbeen employed. It is very difficult, however, to draw a clear dividingline, because cellular independence is not, as a rule, granted to all of theelements in an organ at one time. Strictly speaking, of course, thesyncytial stage ceases when the cells take up their individual existence,but to avoid confusion it is perhaps best to use the same term through-out, provided, it is understood that the tissue so designated is under-going constant Fig. 9. Mucous alveoli of adultpigs submaxillary showing retic-ulating basement by Mallorys method afterZenkers fluid. Attention shouldbe directed to the fact that thescale of this drawing is just one-half that of the balance of theseries. Magnified 450 diameters. THE DEVELOPMENT OF THE PARAPHYSIS IN THECOMMON FOWL. BY FRANKLIN DEXTER, M. D. Associate Professor of Anatomy, The Anatomical Laboratory, Harvard Medical School. With 9 Text Figures. The moment that one begins to examine the literature of this sub-ject he cannot fail to be impressed with the difficulties which presentthemselves. The forebrain has been a favorite subject for study, con-sequently a great deal has been written on it, and so it is impossible tofeel certain that all pertaining to it has been read. It has been con-sidered from many points of view, by means of different methods, andhas received many names, either when considered as a whole, or in itssubdivisions.
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