300 ANIMAL REPRODUCTIONS. 
* hard plane, thus to be fecure of the ampvutas 
* tion, and avoid the inconvenience often attend+ 
‘ing it, more efpecially when performed with 
‘ {ciffars(1). The head was fevered about a line 
* and a half behind the large horns. . 
_ €T have uniformly remarked a cerulean fluid 
* come from the horns, particularly the larger, 
‘ which bedews the dividing blade. This fluid is 
‘ eafily obferved, if the operation is performed in 
‘ water, and moft perceptible if the water be |il- 
‘ luminated by the bright rays of the fun. Not 
‘only do we then difcover that the liquid is 
¢ greenifh, and is the blood flowing in the vef- 
‘ fels of thefe animals, but alfo the quantity and 
‘ force with which it fpouts. I have fometimes 
‘ feen it continue feveral feconds, then ftop, and 
‘ again {pring from the fame wound in greater 
‘abundance. When the extremity of the horns 
“is cut off, they frequently appear flaccid, faded, 
‘ and fallen down on the lips, and their inability 
‘to fwell and extend, feems to indicate, that 
‘one is not far from the truth who fuppofes, 
‘ that to this fluid alone the protrufion and ex- 
‘tenfion of the horns are owing: becaufe, I 
‘ have found nothing in all the external organi- 
‘ zation, by my utmoft exertions, I have never 
* fucceeded 
(1) The fame precaution has laudibly been obferved 
by Dr Vincenzo Plateretti, as is mentioned in the Scelta 
di Opufcoli di Milano. 
