50 . 
to the sinus. 
In froe~~ariins the conditio?- of the duets is T&ri*blc. "She 
eenfisciiio of the gonad tubules to the Wolffian riuot is reta csd is 
four of the five cases studied# *r.d, in the e caption, the whole 
of the interior pjiri f the duct was ^{taorttai a . in the f conic. 
Iha ducts tisasilTss eery in cone it! on* but, with the e 'caption of 
the Il.tfc cs. free-sari in, where they appear t; bar® fe.hawed aa a 
female cot for sous ccncidarable time mad degeasratad# then to have 
bean stlaslated; they are me c in typo. represent V oca of a male 
of an earlier stage. 
Ae to the aeaifi&l naloltt;- tboy develop s sevitat later in the 
female, 7*5 cm.. chile in the male they appear first at S.l css. 
In the fanale there are fire or perhaps nor# prirordia that begin 
to develop at various stages, but none reach *m? else ap roeiable 
in gross dissection, ana in later atagaa they appear or; an inter¬ 
rupted duct, end ssmstiae* an isolated parts of it, always farther 
forward than in nalea in later ntages. 
In sales one vesicle develops and grows strongly tc a coa^ider*- 
able long!?, before branching, and its single duet epos* into the 
Wolffian duct progressively n&urer the poster.or end of that duct, 
as tbs erbry© increases in si so. ?» ©as ease there we-* « eiinuto 
second outpouching of t-.e solffUra duct in the region eher* a second 
vssicl* wot-.Id cone in s fatale, but it did not develop* 
In f r ee-ssart l ns there arc an easy me c oven amofe prissordia . 
that get a start, -hey are not so lon^, a- in rale* of oowreapending 
else, but are developed after tor. jaolo peiierr. In ihi* also there 
is varieties in free-asariir*. of the sam* also, here also the 11.75 
es. freo-ssartin (fig. 22)# is like a fcasl* Van tfc« other * and 
appears to have developed lc- ger at*- a female. .In l.a larger otag.es, 
though store mssffQCs than in the male, they develo like then. Ihe 
oldest cue with its eleven separate vesiolss on each side give* a 
alee picture of a gradient of differential growth and inhibition 
