in Dissections: Plane & Fancy, by Greg N. Frederickson:

On page 32, I gave Kelland's dissection of a gnomon to a square, but didn't include it in the Index of Dissections.

On page 37, I mentioned Sam Loyd's dissection of squares for 1^{2}+ (sqrt(8))^{2}= 3^{2}, noting that it is lurking in Fig. 4.24. I should have included it in the Index of Dissections.

The dissection of a {14/3} to two {7/2}s was not included in the Index of Dissections. The dissection appears on page 180.

On page 270, I gave Dudeney's dissection of a mitre to a square, but failed to include it in the Index of Dissections.

On page 270, I gave Dudeney's dissection of a mitre to a square, but failed to include it in the Index of Dissections.

I should have included the following people in the index:

- Janos Bolyai, 221
- Nikolay Lobachevsky, 221
- (Mr.) Lowry, 221

Under {3}:

1^{2}+2^{2}+2^{2}= 3^{2}, 45

should be preceded by a "for".

2^{2}+3^{2}+(sqrt(12))^{2}= 5^{2}, 45

should be preceded by a "for".

for x^{2}+y^{2}+z^{2}= w^{2}

should have both entries together and should precede

for x^{2}+y^{2}+z^{2}+ w^{2}= v^{2}.

Under {4}:

{tilde 3}, 136

should be preceded by a "for".

2^{2}+3^{2}+(sqrt(3))^{2}= 4^{2}, 37

should be preceded by a "for".

Under {L}:

{12/5}, 211

should be 21 rather than 211.

*Copyright 1998-2012, Greg N. Frederickson*.

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