VOL. HI.] PHILOSOPHICAL TRANSACTIONS. 303 



that neither the substance of the epididymis nor of the testis itself, in the 

 human subject, is glandular. 



K K, The vas ejaculatorium, a direct continuation of the epididymis. -J- 



An Account of livo Boohs, N" 42, p. 845. 



I. A Continuation of New Experiments Physico-Mechanical, touching the 

 Spring and Weight of the Air, and their Effects; the first part, &c. by the Ho- 

 nourable Robert Boyle, Fellow of the Royal Society. Oxford 1668, in 4to. 



The illustrious author of this book has again furnished the philosophical 

 world with a set of very material and pregnant experiments, which are partly 

 improvements of the former of this nature, partly superadded new ones ; con- 

 cerning which, he declares, that in great part he aimed thereby to show, that 

 these very phaenomena, which the school philosophers urged as clear proofs of 

 nature's abhorrency of a vacuum, may not only be explained but actually exhi- 

 bited, some by the gravity, and some also by the bare spring of the air ; which 

 latter he now mentions as a distinct thing from the other, not as if it were ac- 

 tually separated in these trials, since the weight of the upper parts of the air 

 does, as it were, bend the springs of the lower, but because that having in 

 the formerly published experiments, and even in some of these, manifested the 

 efficacy of the air's gravitation on bodies, he thought fit to make it his task in 

 many of these, to show that most of the same things that are done by the 

 pressure of all the superincumbent atmosphere acting as a weight, may be like- 

 wise performed by the pressure of a small portion of air, included indeed, but 

 without any new compression, acting as a spring. 



II. Hydrologia Chymica ; or, the Chemical Anatomy of the Scarborough and 

 other Spas in Yorkshire, &c. by W. Sympson. London, 1668, in Svo. 



Owing to the very imperfect state of chemistry at this period of time, the 

 account here given of the Scarborough water is not such as can be in the least 

 degree interesting to the chemical reader of the present day. 



•f The course which the semen takes is, to denote the parts through which it passes by the terms 

 employed in modem anatomy, as follows : It is secreted in the tubuli sive canales seminales (of which 

 the lobuli of the testicles are composed) j from these canals (which terminate in the rete vasculosum 

 of Haller) it passes into the vasa efFerentia (which issue from the aforesaid rete vasculosum) and is 

 carried by them (the vasa efFerentia testis) to the coni vasculosi of the epididymis; then along the 

 canal of the epididymis ; from whence it is conveyed by the vas deferens to tlie vesiculae seminales j 

 and lastly (dum coitus fit) it is discharged from these reservoirs (the vesiculae seminales) by their 

 excretory duct (ductus excretorius sive ejaculatorius seminis) into the urethra. 



