[35] I have followed up Mr. Trewby’s hint, and find that more than one quality of scrim is made. The best, made entirely of flax, costs rather more than the 2¼d. stated in the estimate, but it is the cheapest practically. The best I have seen is that used in the Houses of Parliament.

[36] Watt’s own figure for the latent heat of steam at 212° was 950°, but I adopt that which is now generally accepted.

Transcriber’s Notes

Cover created by Transcriber and placed in the Public Domain.

Punctuation and spelling were made consistent when a predominant preference was found in this book; otherwise they were not changed.

The original text contained many typographical errors. The simple ones were corrected without comment here; others are noted below.

Unbalanced quotation marks were corrected, as proper placement always could be determined.

Some typographical errors probably remain undetected.

Ambiguous hyphens at the ends of lines were retained; occurrences of inconsistent hyphenation have not been changed.

Text uses both “Acadamy” and “Academy”; both retained here.