CYLINDRICAL CYEMATA. 



145 



(5) Sections were cut longitudinally through the em- 

 bryo attached to the chorion. The amnion and chorion 

 are fibrous, and the non-vascular villi are matted together 

 by an inflammatory exudate; the whole being covered 

 by a very thin, inflamed decidua. Between the amnion 

 and the thick, macerated, degenerate chorion there is a 

 very dense reticular magma containing a small collapsed 

 and dissociated umbilical vesicle. The embryo is pear- 

 shaped, with the stem attached to the amnion, there 

 being no umbilical cord. It is composed of a mottled mass 

 of round cells, so that only the central nervous sjstem 

 can be made out with precision. The latter is a small 

 mass of cells located in the dorsal midJine and in the head. 

 Both eye-vesicles are present, but not connected with the 

 brain. 



(6) Mild infiltration. 



No. 856. 



(1) C. O. Henry, Fairmount, West Virginia. 



(2) A 57X31X26 mm.; B 5mm. 



(3) Polish woman aged 17 years; married August 30; 

 first pregnancy. Last menstrual period December 24^28 

 (same year); abortion February 11 following. Condition 

 of uterus good; no infection. No venereal diseases. 

 Family fertile. 



(4) The specinien consists of a pear-shaped, thin-walled 

 transparent vesicle measuring 57X31X26 mm. The sac, 

 which seems to be the denuded chorion, is sharply pointed 

 at one end. An opaque, white, and comparatively straight 

 embryonic remnant was found protruding from one side 

 of the wall of the sac, near the base. The embryo measures 

 about 5 mm. and somewhat resembles an embryo with 15 

 somites. 



(5) The non-vascular chorion and amnion are thin and 

 fibrous, and covered by a single layer of degenerated cells. 

 There are no villi. The embryo is completely dissociated; 

 the central nervous system, which appears as a solid mass, 

 reaches through its whole length. There is an indication 

 of the co-lorn, and in the lower part of the embryo the 

 myotomes can just be made out. In this region the tissues 

 are dissociated. The cord is short and attached directly 

 to the chorion, which here contains a few islands of blood- 

 cells. 



No. 8746. 



(1) Homer Scott, Little Rock, Arkansas. 



(2) A 35X30X30 mm.; B 3 mm. 



(3) Patient aged 32 years; married September 9, 1906. 

 Four pregnancies. Last menstrual period January 23 to 

 28, 1914; abortion April 13 following. No infection of 

 uterus. First abortion in her family. 



(4) The chorion, which is transparent and spherical, 

 measures 35X30X30 mm., and is partly covered with 

 atrophic villi. It contained clear fluid, within which the 

 amnion, 10 mm. in diameter, was floating. The ccelom 

 was filled with delicate reticular magma. The embryo, 

 which is cylindrical in form, was attached to the amnion. 



(5) The chorion is closely covered with villi, which have 

 a reasonable amount of trophoblast and some mucoid 

 substance between them. The mesoderm is somewhat 

 fibrous. The embryo is closely attached to the amnion, 

 and at the point of attachment the ca>lom communicates 

 freely with the cavity of the chorion. It appears as though 

 there was an arrest of development at this point. The 

 ccclom is distended, but the greatest distention is in the 

 central nervous system, in which it is so pronounced that 

 it might be called "hydrocephalus." The eyes are very 

 small and atrophic. 



(6) Hydatiform degeneration. Decidua absent. 



No. 885. 



(1) Robert Dodds, Chicago, Illinois. 



(2) B 10.3 mm. 



(3) Patient aged 33 years; married April 1906. Three 

 pregnancies two births and one abortion. Last menstrua, 

 period September 5, 1910; abortion January 11 following 

 Condition of uterus normal. No venereal diseases. Fam- 

 ily fertile. 



(4) The specimen consists of a small cylindrical em- 

 >ryo 10.3 mm. The head is rounded and the extremities 



are barely marked. The cord is long, running out to a 

 slender point at its attachment to the chorion, and has 

 undergone mucoid degeneration. 



(5) The tissues are markedly dissociated, but the skin 

 and epidermis are intact. The brain is converted into a 

 vind of unformed mass, and the front of the head has grown 

 over into the thorax, concealing entirely the lower jaw. 

 The heart is represented by a mass of round ctlls. The 

 'iver and intestines can be outlined. 



No. 915a. 



(1) C. S. Minot, Boston, Massachusetts. 



(2) A 26X24X15 mm.; B 4.6mm. 



(4) The specimen consists of a flattened spherical ovum, 

 measuring 26X24X15 mm., covered over most of its 

 extent by villi which reach 9 mm. in length. It was opened 

 freely so as to completely expose the chorionic cavity, in 

 which are a moderate amount of reticular magma and a 

 collapsed spherical amniotic sac about 10 mm. in diameter. 

 Through the walls of the latter an opaque white embryo, 

 apparently free in the amniotic cavity, can be seen. It 

 measures 4.6 mm. in length and is distinguished by a 

 marked dorsal concavity. The head is represented by a 

 practically featureless nodule in which ope may make out 

 the mouth. An extension of anterior limb-buds may be 

 seen. 



(5) The amnion and chorionic wall are somewhat fibrous, 

 as is also the mesenchyme of the villi. The trophoblast is 

 scanty. The embryo has been almost completely disso- 

 ciated and only the central nervous system can be made 

 out with precision. It forms a solid strand which is en- 

 larged within the head region, and ends in front in a very 

 small solid mass to which are attached two rudimentary 

 63 - es. There are no lenses. 



(6) Hydatiform degeneration. Decidua absent. 



No. 933. 



(1) Gilbert M. Elliott, Brunswick, Maine. 



(2) A 37X32X40 mm.; B 4.5 mm. 



(3) Patient aged 32 jears; married in 1904 or 1905. 

 Four pregnancies. First ended at term, 1906; second in 

 abortion at three months, 1910; third at term, 1912; 

 fourth, this abortion, August 5, 1914. Last menstrual 

 period supposed to be about the middle of June. Condition 

 of uterus normal. Patient has slightly contracted pelvis. 

 Family fertile. 



(4) The specimen consists of a spherical ovum measur- 

 ing 37X32X40 mm., about one-half of which is covered 

 with villi, normal in form, and reaching 9 mm. in length. 

 The remainder of the ovum is devoid of villi. In the 

 denuded area the chorion was carefully opened, disclosing 

 a beautifully transparent spherical amniotic sac, about 

 20 mm. in diameter. Although separated by a considerable 

 distance, the amnion is bound to the chorion by many 

 invisible magma strands. The spherical yolk-sac is 8.5 

 mm. in diameter. Within the amnion an opaque white 

 embryo, measuring about 4.5 mm. long, could be seen. 

 It is clearly malformed. 



(5) Sections of the chorion show that the tissues appear 

 to be quite normal, but the trophoblast is scanty. There 

 also are strings of mucus in the intervillous spaces. The 

 embryo was cut with the chorion and amnion around it. 

 The tissues are markedly dissociated, but the organs can 

 still be made out. The eye-vesicles are very small and 

 atrophic, and the lenses still attached to the skin. The 

 central nervous system is practically solid. The blood 

 from the blood-vessels extends over into the tissues. 



(6) Early hydatiform degeneration. Decidua absent. 



No. 937. 



(1) Gilbert M. Elliott, Brunswick, Maine. 



(2) A 30X11X7 mm.; B 4mm. 



(3) Patient aged 27 years; married in 1907. Ihree 

 pregnancies First and second at term, June 1908 and 



