328 Jacob Parsons Schaeffer. 
figuntur. . . . . Antrum hoc frequentius vacuum, aliquando 
muco repletum reperitur, in quod humores a capite per meatum quendam 
a cavitate illa in osse fronts et ab osse ethmoeide destillare poterunt. 
Atque hic silentio praeterire non possumus, quod generosae cuidam 
foeminae sub nostra cura laboranti accedit. Cum sub ferina eaque 
continua falsi humoris distillatione, per multos retro annos laborasset, 
omnesque pené dentes corrosos ac cariosos evulserat; nec tamen a 
dolore liberata, tandem dente canino sinistri lateris effosso 
Simu! squammosa illa distinctio inter cavitatem hance et dentis fanpeane 
eriptur, adeo ut humorum, per alveolum dicti dentis, ab antro illo 
perrenis successerit destillatio; Qua multum perterrita, stylo argenteo 
in alveolum immissa originem fontis hujus exploratura, usque ad 
oculum, per uncias pené duas sursum adegit; magis adhuc metuens, 
pennam minorem plumis decerptis totam pené ad_ longitudinem 
palmae unius immisit. Iam maximae consternata, ad Cerebrum usque 
decurrere existimans, me inter alias consulit; ubi autem singulas exam- 
inavimus circumstantias, pennae reduplicationes, illamque per cavi- 
tatem hane circumgyrare invenimus. Atque sic, ubi in figura seguenti 
cavitatem hane designavimus, illam de usu ac necessitate hujus satis 
instructam, perennisque illius fontis patentissimam habuimus, a timore 
et medicina simul desistit. 
Antrum hoe levitatis ossium causa, quae hic oculorum situs gratia 
crassa esse debuere, factum esse arbitramur. 
The antrum (sinus maxillaris) described by Highmore must 
have been an exceptionally large one, because the canine tooth 
does not as a rule come in relation with the sinus. This same 
tooth is mentioned by some writers even today as the tooth to 
extract in draining the sinus. It is a very bad tooth to select 
for this purpose in the great majority of cases. This fact will be 
referred to in a subsequent paragraph when considering teeth 
relations. It will also be noticed that Highmore had a somewhat 
faulty idea of the shape of the adult cavity. He, however, 
mentions some very essential conditions in his descriptions of 
the adult sinus. His consideration of the cavity is very brief 
and many important factors are omitted. His report of the case 
through which his attention was called to this cavity, is unique and 
interesting. 
