The French psychologist Pierre Janet (1859–1947) by Paul François Arnold Cardon a.k.a. Dornac (1858–1941).
Paul François Arnold Cardon
before 1942 <div style="display: none;">date QS:P,+1942-00-00T00:00:00Z/7,P1326,+1942-00-00T00:00:00Z/9</div>
<a rel="nofollow" class="external free" href="http://www.artfinding.com/images/svv/2/324/paul_marsan_dit_dornac__docteur_pierre_janet-115-1.jpg">http://www.artfinding.com/images/svv/2/324/paul_marsan_dit_dornac__docteur_pierre_janet-115-1.jpg</a>