The preface: I devis'd tbem -> I devis'd them The preface: make Expements -> make Experiments The Publisher to the reader: made of Eperiments -> made of Experiments I. Ch. III.6 divers Expements -> divers Experiments I. Ch. III.13 epecially with some sorts -> especially with some sorts II. Ch. II.8 Slightet Texture -> Slightest Texture II. Exp. I two Colonrs -> two Colours II. Exp. XIII were the change of Colour -> where the change III. Exp. XII avoiding of Ambignity -> avoiding of Ambiguity III. Exp. XXIX Juice of this Sipce -> Juice of this Spice III. Exp. XL forty second Expement -> forty second Experiment III. Exp. XLIV keep them swimning -> keep them swimming III. Exp. XLVI it seem'd propable to me -> it seem'd probable to me III. Exp. XLVII where not comprehended -> were not comprehended III. Exp. XLVIII frequent Igintion -> frequent Ignition III. Exp. L I could tell yon -> I could tell you A Copy of the Letter: nemo unqnam vere -> nemo nunquam vere (ib.): what is reladed -> what is related Observations: carefulsy drawn -> carefully drawn - and emended Phoenomenon/a to Phaenomenon/a 10 times and Coeruleous etc. -> Caeruleous 20 times