Heron <Alexandrinus> - Heronis Alexandrini spiritalium liber

Heron <Alexandrinus>, Heronis Alexandrini spiritalium liber

Table of contents

[21.] XIV.

[22.] XV.

[23.] XVI.

[24.] XVII.

[25.] XVIII.

[26.] XIX.

[27.] XX.

[28.] XXI

[29.] XXII.

[30.] XXIII.

[31.] XXIV.

[32.] XXV.

[33.] XXVI.

[34.] ALITER. Poteſt autem & aliteridem effici.

[35.] XXVII.

[36.] XXVIII.

[37.] XXIX.

[38.] XXX.

[39.] XXXI.

[40.] XXXII.

[41.] XXXIII.

[42.] XXXIV.

[43.] XXXV.

[44.] XXXVI.

[45.] XXXVII.

[46.] XXXVIII.

[47.] XXXIX.

[48.] XL.

[49.] XLI.

[50.] XLII.

118112JO. BAPT. ALEOTTI

Fabricare conclave, in quo quando libitum fuerit, ventus
ſpiret, qui id refrigeret, pro libitu modo lenior, modo
fortior.

Theorema IV.

EXcavetur ſub plano conclavis A B C D E, quantum videbitur ſuffice-
re pro quantitate venti intromittendi, conclave tam latum, quam
iſtud conclave eſt altum, ad minimum pedibus decem; ſitque calce in-
termixtis lapidibus æqualis quantitatis plus minus ſubtiliſſimè ſubacta ſe-
cundum qualitatem calcis optimè oblitum & interlitum: dividaturque in

93[Figure 93] duo conclavia intermedio fornice vel diaphragmata, ut X Y. Quorum
unumquodque ſit 5 pedum, & oblitum. Quotidie per ſpacium octo die-
rum humectetur tectorium, complanetur & poliatur optime opera fabri
murarii, ita ut concavia continere valeant & aërem & aquam,

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