# Erratum

**Author(s):** Anonymous  
**Year:** 1814  
**Journal:** Philosophical Transactions of the Royal Society of London  
**Volume:** 104  
**Pages:** 2 pages  
**Identifier:** jstor-107453  
**JSTOR URL:** <https://www.jstor.org/stable/107453>  

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ADDITIONS AND CORRECTIONS.

Page 135, last line but two, for $\sigma \frac{dx}{dt}$, read $\sigma \frac{dx_o}{dt}$
one, for $\sigma \frac{dy}{dt}$, read $\sigma \frac{dy_o}{dt}$
, for $\sigma \frac{dz}{dt}$, read $\sigma \frac{dz_o}{dt}$

141, line 1, for $\sigma' \rho^o \cos \lambda^o \sin (c^o - n)$, read $\sigma' \rho^o \cos \lambda^o \sin (c^o - n)$
151, — 1, for $\frac{(r^2 - r'^2)^2}{(r + r')^2}$, read $\frac{(r^2 - r'^2)^2}{(r + r')^2}$
180, — 9, for $\sigma' \rho^o \cos \lambda^o \sin (c^o - n)$, read $\sigma' \rho^o \cos \lambda^o \sin (c^o - n)$
399, line 11, for perfectly, read perfectly flat
18, for S, read S'
22, for s, read s', and for rs, read rs'
402, table, col. 3, for $4^\circ 37'$, read $3^\circ 37'$
403, line 12, for Ms'Nt, read Ms'Nt'
487, — 3, at the word iodine, add the following note: I am obliged to M. Courtois for the iodine employed in these experiments, who, with great liberality, furnished me with a considerable quantity.