59 
1913-14.] The Theory of Bigradients from 1859 to 1880. 
It may be noted as a significant fact in connection with the history 
of the subject that in 1876 the editors of the Nonvelles Annates found 
themselves called on to republish Cauchy’s important paper of 1840 (see 
Hist., i. pp. 240-243). Its reprint occupies pp. 385-416, 433-451 of vol. xv. 
of the second series. On this account, save for junior readers, the 
“ exposition succincte ” above noted was quite unnecessary. 
LIST OF AUTHORS 
whose 
1859. Bruno, F. Faa di . 
1862. Trudi, N. 
1866. Salmon, G. 
1866. Sardi, C., etc. . 
1864- Baltzer, R. . 
1870. Baltzer, R. . 
1875. Baltzer, R. . 
1873. Isis, E. . 
1874. Janni, V. 
1874. Zeuthen, H. G. 
ritings are herein dealt with. 
32 
1875. Madsen, V. H. O. 
33 
1875. Lemonnier, H. 
50 
1878. Lemonnier, H. 
50 
1876. Muir, T. . 
50 
1877. Ventejols 
50 
1877. Dickson, J. D. H. 
50 
1878. Mansion, P. . 
52 
1879. Gunther, S. . 
52 
1879. Mansion, P. . 
53 ! 
53 
54 
54 
54 
55 
55 
55 
56 
57 
{Issued separately February 19, 1914.) 
