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expos’dto view. Whereupon I six*d Spittle in ßveral placcs, and upo»fresh blowing found multitudes of Bubbles, made in the Denudatcd partsof the Lobe. Itnmediately I made adeep transverse Incision imo that Lobe,and blowing in at the Syphon, I found the Air to come so trecly out at thelarger Ramifactions of the Bronchia , that I could notgive the Lobe a con-iiderable rise with a strong Blast : Yet upon stopping with my Fingers thelarger pafläges of the Bronchia, which 1 had cut, I tound that Lobe upon afreth Blast, considerably to arise with unequal Protuberanccs (where theIncision was made,) giving no sinall solpicion of some latent Vesides.

Hereupon I ty’d that Lobe above the Incision, and taking off part of theexternal Membrane of another Lobe, (having first ty’d up all the reff of theLobes,) I pour’d Water into the Syphon, and apply’d a strong Blast, inhopesto have the Water come forth in streams at all the Fores , but that didnot sitisfactorily fucceed, it coming out in a confused Irroration of the cx-ternal Surface, without any Ebullition,unleß at the larger Ramification of theBronchia. Then I ty’d up this second Lobe, and unty’d a third, pouringin an Ourice of the Oyl of Turpentine ; at the Syphon I gave a sinall Blast,and Corked it up. T wo Hotirs aster I took off the sinall Membrane of thatLobe, and upon a gentle Blast at the Syphon found an Ebulljtion of infinitelittle Bubbles.

Mar. i o. (having continu’d it to the Chimney,) I cut all their Lobes in.pieces by different and various irregulär Incisions; whencel could easily ob-lerve the several Ramifications of the Aerial and Sanguineous Veffels, withtheir continuation to the Circumference of the Lobes, and a proportionaleDiminution as they were at a further distance from their original.

Shall I hence conclude the structure of the Lungs to be a Complicationof a multitude of the Ramifications of the Bronchia and SanguineousVeffels ? And that the seeming Vesides were occasion’d only by the vio-lence of the Blast, and the drynesi of the extreme and smallest Passages ofthe Aerial Veffels; whereupon, thole nearestto the Bronchia f being moister)were, more than their ordinary proportion, extended, upon hindranceof a free and usoal Passage to the Air in the Ieffer Veffels or their Extre-mi ties ?

- IV. Pierce the side of a Dog between the 6th and yth Rib in the mxddle Ult i kfei , meutof the "Thorax, just over against the Region of the Heart, with a sinall In- the

cision-Knise, palling the Knife but just into the Cavity of the Breast hyö^(which you may justly know by finding no resistance to the point of it); then Rieh. Lower,takc it out, and put in a Director, or a sinall Quill made like it, and thrust * 44 '

it in about an Inch, directing the end of it toward the dose to

the inside of the Breast. Then cut upon it about an Inch on the IntercoßalMuseks; by which you may be secur’d from touching the Lungs with thePoint or Edge of your Knife. This done, put in your Finger, and withyour Nail separate the Nerve which pafleth along the fide of the Pericardi-um toward the Diapbragme. Then put in a Probe, a little inverted at theend like a Hook, and apprehend the Nerve, and pull it to ihc Orifice ofVol. III. K the