. American journal of obstetrics and gynecology. cln-Van Gleson Stain. Uterus twelve days post-partum. Picture shows a group of arteries In various stages of degeneration. Theupper vessels show practically the same stage. The internal elastic membrane Isseen as a swollen, blacklsh-rcd, irregular band, with marked swelling of the some places the internal elastic membrane has already become diffused and lostits staining reaction. The two lower show arteries which stain a brick-red,all traces of the internal elastic membrane being lost. SCHWARZ AND MC NALLEY : UTERINE VESSELS D
. American journal of obstetrics and gynecology. cln-Van Gleson Stain. Uterus twelve days post-partum. Picture shows a group of arteries In various stages of degeneration. Theupper vessels show practically the same stage. The internal elastic membrane Isseen as a swollen, blacklsh-rcd, irregular band, with marked swelling of the some places the internal elastic membrane has already become diffused and lostits staining reaction. The two lower show arteries which stain a brick-red,all traces of the internal elastic membrane being lost. SCHWARZ AND MC NALLEY : UTERINE VESSELS DURING PREGNANCY 157 that they are due to the invasion of the vessel walls by fetal elements,with subsequent fibrinoid degeneration. He states that he found thesechanges in twenty-seven of fifty specimens. He was not at that timeprepared to express a definite opinion as to the mode of production ortheir significance, but that within a reasonable time he expects to pub-lish a communication upon the subject, which he hopes will aid in Fig. 2.—Ob. Path. No. 2352. Orcein-Van Gieson Stain. High power of Shows markedly swollen internal elastic membrane staining blaclcish-rert, withswollen intima and swollen media. The work of Frankl and Stolper, Sehiekele and Heckner pertainschiefly to the clianges of tlic intima. To these changes we will referlater, and so far as we know, oidy brief references regarding the moreextensive vessel changes have been made, namely, by Sehiekele, Wil-Hams and Heckner, but their relationship to changes occurring afterdelivery wore not pointed out. Although the work of tlie foreign writers 158 THE AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY appeared later than that of Goodall, they make no reference to thisauthor. Goodall studied only uteri in the puerperium. His earliest case wasforty-four hours postpartum. Concerning his findings in this specimenhe states that among the vessels of the uterine wall in the direct path ofthe placental
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