Excerpted from Dialogus 1.2.5, 1.4.25, 1.5.3, 1.5.22

It seems that in the species of water baptism can occur; for water is not capable of baptism according to the fact that it is something common, but according to its essence, what it holds in its nature, because according to this it has properties signifying the effect of baptism; moreover according to its essence, what it holds in its nature, is in its species, therefore according to its species it is capable of baptism; but since playfulness and wine are forms of water according to Aristotle; it seems that in these one can become baptized.

Moreover: just as Aristotle says in his book On Generation, species of simple elements remain in a mixture, therefore it seems that in water, after it is in a mixed body, baptism can occur. 

Also: because in beer and in waters changed through skill; for skill does not give substantial form, because form is an accident of skill therefore water is not changed from its form, therefore in it baptism can occur.

Dicimus quod aqua maxime competit baptismo inter alios liquores, et hoc propter tria: aqua enim communis, et ideo communis materia debet respondere sacramento necessitatis, ne propter defectum materiae privaretur aliquis salute, quae est per baptismum; secundo, quia alii liquores propter hoc quod adhaerent corpori, non simpliciter mundant, sed tingunt; unde non ita congrue significant interiorem mundationem; tertio, quia primum mundans est aqua, etsi enim alia mundent, habent hoc, secundum quod participant aliquid aquae.

Ad primum ergo dicendum quod effectus non est de essentia eius tantum; effectus autem baptismum consequens est consecutio gratiae; unde non debet esse in sacramento baptismi adhaesio respondens consecutioni gratiae. Vel dicendum quod aqua per hoc quod abluit,facit etiam nitere, et illi nitori respondet collectio virtutum in re sacramenti.

Ad id autem quod ulterius quaeritur, sciendum quod in omnibus speciebus, in quibus manet aqua secundum duum effectum in impetu infrigidandi, mundandi et fluendi potest fieri baptismus.

Unde in quibusdam aquis alchimicis, quae per effectum manifestantur alterius speciei, quia convertunt metalla, quod non est effectus aquae, et si moveantur, stant et non fluunt, non posset fieri baptismus, et similiter in iure olerum, quia non manet effectus mundandi. Sed in aqua calida potest, quia licet per violentiam sit in contraria dispositione, manet tamen naturalis virtus ad infrigidandum.