312 PHILOSOPHICAL TRANSACTIONS. ^ [aNNO 1706. 



carry it to the pancreas ; whose office is further to elaborate and exalt the chyle, 

 and to evacuate the excrementitious part into the intestines by the new duct of 

 Virsungus. That he had seen lacteal veins going from the mesocolon to the 

 intestines.* That the external haemorrhoidal veins are derived not from the 

 vena cava, but from the vena portae. That many branches of the splenic vein 

 are distributed through the whole parenchyma of the spleen, contrary to the 

 assertion of Sylvius. That when a person dies of a chronic disorder, the spleen 

 becomes black ; when suddenly, or of an acute disease, it is of a redder colour. 

 That the new pancreatic duct, and porus choledochus, open into the duodenum 

 at the same place ; there are instances however, as in dogs, where they form 

 distinct apertures. 



In this, as indeed in all other subjects, the left kidney was larger than the 

 right, and seated higher up. As this kidney is more remote from the trunk of 

 the vena cava, its emulgent vein is longer. He assigns as a reason for the 

 difference in these respects, between the right and left kidneys, that the right 

 kidney is pushed down, and confined in its growth, by the weight of the liver 

 lying above it. In this subject there were two emulgent arteries to the right 

 kidney. 



He asserts that he had seen lacteal veins [lymphatic veins] dispersed over the 

 uterus in cases of pregnancy ; from which vessels he supposes to be derived the 

 watery fluid in which the foetus swims in utero.-f- 



The tubes of the uterus answer to the cornua uteri of brutes ; they are hol- 

 low from one end to the other, and capable of admitting a probe. Their inner 

 coat is white, and they frequently contain a whitish serous humour, which he 

 supposes to be the semen muliebre. The testiculi muliebres (ovaria) have no 

 epididymides, &c. &c. 



Qu6d testes tam in maribus quam in foeminis ad generationem nihil condu- 

 cant memorabili imprimis experimento probavit. Canis nimirum masculi testes 

 execuit epididymidibus integris relictis, deinde canem foeminam in cubiculo con- 

 clusit per tres annos, nee ullum admisit ad earn canem cum salaxasset praeter 

 castratum hunc, qui canem iniit et cum ei saepiils implicatus est ; triennio haec 

 ter peperit, una vice 7 catulos, altera Q, tertia 5. Re satis explorat^ foeminam 

 dimisit. Alias duas vel tres historias huic parallelas nobis narravit ; unam de equo 

 castrato relicta tamen epididymide una, qui equas saepiils impraegnavit, fuitque 

 in venerem admodum proclivis : alteram de cane quem ipsius servus execuit : 

 tertiam de homine quodam rustico, qui ob bubones venereos utrumque testem 



* These, says Mr. Ray, I have also seen. 



t These lacteal or lymphatic veins (adds Mr. Ray) are very clearly seen in sheep that are big with 

 yoong. 



