68 
Contents of Volume XIII. 
918. 
919. 
920. 
921. 
922. 
923. 
924. 
925. 
926. 
927. 
928. 
929. 
930. 
931. 
On the substitution-groups for two, three, four, five, six, 
seven, and eight letters. ....... 
Quart. Math. Journ., t. xxv (1891), pp. 71—88, 137—155 
On the problem of tactions ....... 
Quart. Math. Journ., t. xxv (1891), pp. 104—127 
On orthomorphosis ......... 
Quart. Math. Journ., t. xxv (1891), pp. 203—226 
On some problems of orthomorphosis . ... . 
Crelle’s Journal der Mathem., t. cvn (1891), pp. 262—277 
Note on the lunar theory ........ 
Monthly Notices of the Royal Astronomical Society, t. lii (1892), 
pp. 2—5 
Note on a hyperdeterminant identity . ... . 
Messenger of Mathematics, t. xxi (1892), pp. 131, 132 
On the non-existence of a specicd group of points . 
Messenger of Mathematics, t. xxi (1892), pp. 132, 133 
On Waring s formula for the sum of the m th powers of the 
roots of an equation ........ 
Messenger of Mathematics, t. xxi (1892), pp. 133—137 
Corrected seminvariant tables for the weights 11 and 12 
American Journal of Mathematics, t. xiv (1892), pp. 195—200 
On Clifford's paper “ On syzygetic relations among the powers 
of linear quantics " ....... 
Proc. Lond. Math. Soc., t. xxm (1892), pp. 99—104 
On the. analytical theory of the congruency .... 
Proc. Lond. Math. Soc., t. xxm (1892), pp. 185—188 
Note on the shew surfaces applicable upon a given shew 
surface ........... 
Proc. Lond. Math. Soc., t. xxm (1892), pp. 217—225 
Sur la surface des ondes ....... 
Annali di Matematica, Ser. n, t. xx (1892), pp. 1—18 
On some formula of Codazzi and Weingarten in relation to 
the application of surfaces to each other . 
Proc. Loud. Math. Soc., t. xxiv (1893), pp. 210—223 
On symmetric functions and seminvariants . 
American Journal of Mathematics, t. xv (1893), pp. 1—74 
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