OF THE BLADDEE AND PEOSTATE. 
41 
(qt), oblique ( uvwx ), and very oblique or circular fibres (y), as seen in layers 
1, 2, 3, & 4. 
2, 2. Portions of ureters. 
Fig. 7. Left lateral view of young adult male bladder, showing longitudinal ( a b, op), 
slightly oblique ( cd ), oblique (gill), and very oblique (Jclmn) spiral figure- 
of-eight fibres, as seen in layers 1,2, 3, & 4. 
x. Urachus. 
Fig. 8. Fight lateral view of adult male bladder, showing longitudinal (a b, op), slightly 
oblique ( q ), oblique (g g, hh), and very oblique spiral fibres (n), as seen in 
layers 1, 2, 3, & 4. 
2. Portion of ureter. 
x. Urachus. 
Fig. 9. Left lateral view of adult male bladder (transparent), showing longitudinal^ b), 
oblique (qq, rr, 7i7i, g g), and very oblique or circular fibres (mn), as seen in 
layers 1, 3, & 4. 
2. Portion of ureter. 
x. Urachus. 
Fig. 10. Anterior view of adult male bladder inverted, showing longitudinal (a b), 
slightly oblique ( cdef ), oblique ( ghij ), and very oblique (7c) spiral figure- 
of-eight fibres, as seen in layers 7, 6, 5, & 4. The internal fibres are fewer 
in number and more rudimentary than the external ones, but their directions, 
as a little careful examination will show, are the same. 
x. Urachus inverted. 
Fig. 11. Anterior half of adult male bladder, seen from within (transparent). Shows 
longitudinal (a) and very oblique or circular fibres, forming the fourth or cen- 
tral layer ( kl); also the continuations of those fibres in a downward direction 
towards the cervix, where they are arranged in two sets (mm', yy'), and are 
principally concerned in the formation of the sphincter vesicas. 
x. Urachus, from within. 
Fig. 12. Posterior view of adult male bladder inverted. Shows longitudinal (oo,pp) 
and very oblique or circular fibres (7c 7c, ll), as seen in layers 7 & 4. 
PLATE IV. 
Fig. 13. Apex of adult male bladder placed upon its posterior surface (transparent). 
Shows longitudinal (ao), slightly oblique (ofqt), oblique (gjux), and very 
oblique or circular fibres (7c l), similar to those occurring on the walls of 
the bladder generally. The very oblique fibres are arranged in two sets (7c l), 
as at the fundus. Compare with fibres marked mm', yy' in fig. 11, Plate III. 
Fig. 14. Fundus and cervix of adult female bladder placed on its posterior surface 
(transparent). Shows longitudinal (bp), slightly oblique ( de,rs ), oblique 
MDCCCLXVII. G 
