156 ON THE ORGANS OF GENERATION, &C. 
the seminal urethra contained within the body of the penis 
was greater than that offered by the papillae themselves. 
When the pipe was pushed farther on, so as to enter the 
branch communicating with the main canal in the body of 
the penis, the fluid passed out most readily by a small ori- 
fice, which had been intentionally made in one of the ducts 
leading from Cowper's glands, shewing thereby the very 
free and direct communication between the seminal urethra 
of the penis and the ducts and glands of Cowper. Having 
now secured the duct of Cowper, so as to prevent the fluid 
passing out by the artificial opening, the whole of the fluid 
injected into the seminal urethra by the open papilla passed 
readily out by the common orifice on the lower surface of 
the urethra, the orifice by which the seminal fluid passes 
from the common urethra, to that contained within the 
body of the penis ; but the fluid passed out in such a way 
as shewed that it had entered a common cavity, and that 
having no longer an exit by the ducts of Cowper, it became 
necessarily eff*used into the common urethra by the orifice 
above described. Lastly, having introduced the tube of the 
syringe into the orifice by which the seminal fluid passes 
out of the urinary urethra into the little cavity at the base 
of the penis, and compressing the opening aroxmd the nozzle 
of the tube, the fluid, whether water or quicksilver, readily 
passed out by all the papillae situated in either glans of the 
penis. 
The physiology of these very intricate organs becomes 
now exceedingly simple, and serves to throw considerable 
light on some of the accessory organs connected with those 
of generation. The whole of the accessory organs have 
disappeared, excepting the glands of Cowper, — a fact suf- 
ficient of itself to give an importance to these glands, which 
has hitherto been denied them. But they are moreover 
