Page xv-xvii and Index: the (alphabetical) order of entries has not been corrected.
Errata for page 49: ‘last line’ refers to footnote 28.
Page 32, Fig. 2. and description: as printed in the source document, even though the description does not fully fit the illustration (and vice versa).
Page 74, the end, Fig. 9 and 10: 9 and 10 are reference numbers within Figure 4 rather than figure numbers.
Page 78-79, Eight magnifying lenses ... the list annexed to these Essays: there are no Figures 5 through 12 in Plate III. Several of the items described may be seen in other Plates, but with different reference and figure numbers.
Page 83-84, The two large lenses at F, Fig. 3: there are no large lenses at F, Fig.3 in Plate IX or in Plate III (or in any other Plate).
Page 84, Massachuset’s States: as printed in the source document.
Page 162, ... for the feeding the growth ...: as printed in the source document.
Page 182, ... one of these, i i, b c, Fig. 3. Plate XIII, ... and Page 183, ... the middle part i i ...: there are no reference letters i in the illustration.
Page 205, They first fold back the parts A B: the reference letters are not present in the drawing.