vol. IV.] PHILOSOPHICAL TRANSACTIONS. SQS 



interstitiis,) in testiculis virorum et aliorum etiam animalliim, testimonio sen- 

 suum ostendere posse; hoc ego, pace tanti viri dixero, nonnisi autopsi^ edoctus 

 admittere possum. • Quandoquidem saepissime hominum aliorumque animalium 

 testiculos, exceptis tenuissimis quibusdam membranulis, ita dissolverim, ut ne 

 umbra quidem talis parenchymatis remaneret ; imcl), quod magis est, quorun- 

 dam animalium testiculos ita dissolvi, ut visus acie ne quidem membranulae illaa 

 conspicerentur. Et ut verba mea factis comprobem, mitto ad te Gliris testicu- 

 lum meo modo dissolutum, ut videas, an glandulae tales in testibus (quales 

 proponit Clar. Dn. Clark in Epist. sua, 18 Maii, 1668. Transactionibus Phi- 

 losophicis inserta) vel etiam parenchyma tale, quale in epist. sua 10 Maii, 

 1669, describit, reperiatur. In hunc fere modum reliquorum animalium testi- 

 culos dissolvere possum, e^ tamen diversitate, ut in nonnullorum testibus 

 aliquae membranulae tenuissimae, et in quorundam, radix praeterea epididymidis 

 Highmori, remaneant. 



So far these two industrious physicians, which though it looks very fair to 

 evince, that the testes of animals are made up of nothing but vessels and their 

 liquors, yet Dr. Timothy Clarck, and several other expert anatomists and physi- 

 cians, still doubt whether that be so indeed, considering that not only it can- 

 not be denied, that this curious heap of strings or supposed vessels was at first 

 covered all over with a mucous matter (which in so fine and tender a part may 

 well be thought to serve for a parenchyma), but also that Monsieur de Graeff 

 must himself grant, that in the said part there are found certain small mem- 

 branes besides those vessels he is asserting, such another substance being con- 

 ceived to be highly necessary to serve for a medium, whereby that compounded 

 liquor, which from the greater vessel passes into the minute arteries, nerves, 

 and lymphaeducts of the testes, may be secreted, and according to the different 

 nature and figure of their several particles conveyed into those several small and 

 subtile vessels. 



Extract of a Letter f dated July 1669^ from Dr. JVilliam Durston, 

 Physician at Plymouth, to Lord Viscount Brouncker, P. R. S. con^ 

 cerning a very sudden and excessive Swelling of a Woman's 

 Breasts, N" 52, p. 1047- 



I present your lordship with a phenomenon in nature, which, for its rarity 

 and prodigiousness, may obtain the favour of your perusal. The thing is evi- 

 dent, and can be attested by thousands, as well as by the lord ambassador, who 

 was an eye witness of it, and imposed the task on me, of giving your lordship 

 a perfect narrative, which is as follows : 



VOL. I. 3D 



