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'Ipsam Glandularum Structuram si attingamus, utique multa nobis impo-nere specie Carnis, communiter ita dictae, deprehendemus, quae revera simtVasa Excretoria, uti contingit in Renibus, monente Malpighio. Etenimquemadmodum in Renibus peculiaris illius Substantiae, quam pro Carne ha-buerunt Antiqui, maxima pars constat ex minutis canaliculis & meatibus,per quos Urina in Pelvim affiuit, & quibus circumpositum est verum CribrumGlandulosum pro secernenda Urina ; ita etiam magna pars illius Substantiae»quam quasi peculiarem Carnem vel Parenchyma in Glandulis consideramus,componitur ex variis Tubulorum Glomeraminibus & Vasis Excretoriis Lym-phaticis, Nervis, Vasis Sanguineis, addo Lc Fibris Carneis, quibus non so-lum investiuntur Glandula , sed & eas Substantiae luse intertextas ha-bent.

T><spiratsnuc- X. The Mechanical reason of the Peristahici Motion ofthe Intestines is

,U {tb'h'tepttn’s- s° me Anatomists deduced principally from Annular Fibres, constituting,byDr- will. Cole- according to the received Doctrine, One of the Coats of them. Others are of"• 12;. p. 605. Qpinion, that they are rather numerous though sinall Sphincter Musclesthan single Fibres, to which that Motion is to be attributed j Musolebeing in most, if not all other Instances own’d to be the adequate Instru-ments of Motions Analogous to this ; and Fibres, though absolutely neceffa-ry, yet being no otherwise so than as (a. number of them being collected,and fitly disposed) they constitute a Musole. But 1 found it very difficultto conccivehow the Actuating Matter could be transmitied from One Fibreor Musole to another down along thewhole Tract of the Intellines, since,according to this Annular Supposition, each single Fibre or Musole must bedistinct, a latent Gontiguity being all that can 'be pretended. This, andmany other Difficulties which occurr’d to me, put me upon a stricter Ex-mination. I made the first Experiment in a portion of the upper Intefiines ofan Ox, which by reason of their largeness of proportion to thosc of mostother Species of Animals, seem’dfittest for the Tryal -, afterwards in t hoseof Sheep, and Calves, and not only in the sinaller Intestines > but in theColon and Cacum also. The Circumstances and Resuit of which Tryalsare as follow.

To effect a due Dif junction of the Membranes and Fibres (which I found’twas hard, if not imposiible, for me to malte while ’rwas raw) I was fainto cause the Intestines of Oxen to be boil’d 5 or 6 Flours, of Sheep 4;whereby the Compages of the Parts were so loosen’d, that the two out-ward Coats, vsz,. the common one and that consisting of Rigbt Fibres,wereeasily separated (if it wcre attempted soon aster it was taken out oftheWater) from that to which my soarch was destincd, and lest tholereputed Annular ones naked; (though, by the way, too long Coctionwould prove prejudicial on the other hand, by too much intenerating theFibres.) These at the Top of the Intestines t I attempted to separate from“bne another, and when thosc that had been decurtated by the unequalCuttingof the Knife, were taken off, I found,

1. Th«