241 
1909-10.] Reproductive Organs in the Free-Martin. 
Hunter, John, Account of the Free-Martin ; Observations on certain parts of the 
animal economy : London, sold at Ho. 13 Castle Street, Leicester Sq., 1786 (vide also 
Atlas attached to Palmer’s edition of Hunter’s Works). 
Numan, Dr A., “Memoire sur les vaches steriles,” etc., Journal veterinaire et 
agricole de Belgique , 1844. This is a translation of Numan’s Dutch paper, hut 
unfortunately the illustrations are not given. 
Rueff, Repertor. d. Thierheilkunde von Hering , 12 Jahrg., 1851, p. 103. 
Sanson, A., “ Sur la Sterilite des Genisses jumelles de taureaux,” Bui. Soc. centr. de 
medecine veterinaire , 4e Serie, Tome iii. (1880), p. 132. Tome iv. (1881), p. 103. 
(This I have not seen.) 
Scarpa, Opere varie del Gav. A. Scarpa , etc., Yannoni, Pirenze, 1845, i. p. 175. 
Simpson, Sir J. Y., On the alleged Infecundity of Females born co-twin with Males . 
The Works of Sir J. Y. Simpson, vol. i., edited by J. Watt Black, M.D.; Edinburgh, 
A. &C. Black. See also Article on “Hermaphroditism,” Todd’s Cyclopaedia of Anat. 
and Phys., vol. ii., 1836-39. 
Spiegelberg, “Ueber die Verkiimmerung der Genitalien bei (angeblich) ver- 
schieden geschlechtlichen Zwillingskalbern,” Ztsch. fur rationelle Medicin , Henle and 
Pfeafer, Drt. Reihe, Bd. xi. 
EXPLANATION OF PLATES. 
Plate I. 
Genital organs in full-time free-martin calf (Spiegelberg) (y). 
a , urinogenital sinus laid open from the front and turned back : a sound is 
passed into the Mullerian non-potent element with the knob ending at c, the 
uterus; ad, vesiculae seminales; eef, vasa deferentia; g g, imperfect testes; hh, 
Wolffian bodies. In John Hunter’s free-martin cases, Owen suggested that in wffiat 
Hunter figured as double and differing sexual glands, one might be Wolffian body 
(vide Palmer’s edition of Hunter, with Owen’s notes). 
Plate II. 
Fig. 1. One of Hunter’s free-martin cases. It has the head and horns of the ox 
or spayed animal, but the fore and hind quarters of a hull. Rudimentary nipples 
are present. 
Fig. 2. Sexual gland in Hunter’s free-martin; tubuli seminiferi, slide 678. 
Fig. 3. Sexual gland in Hunter’s free-martin ; epididymis in upper left angle, 
with Mlillerian epithelium and glands below (hydatid testis, slide 691). 
Fig. 4. Testis in scrotum of newly-born human foetus. Testis is below; above, 
on right side, is seen the hydatid testis unattached and then epididymis attached. 
To left of epididymis lies accessory suprarenal body. 
(Issued separately February 11 , 1910 .) 
