The time of sittings for "group" photographs has come at last. The first notice of the season for a sitting is published in our columns this morning, and other notices of the same sort will probably follow in rapid succession. Some men take pleasure in sitting for photographs; to them we need give no urging. But many more either are quite indifferent to sitting, or find it an irksome task. To such we say only this. Failure on any one's part to comply with the requests made in the notices of the different secretaries of clubs and societies, not only inconveniences the photographer, but shows a disregard of the feelings and desires of others, and help to defeat the very object for which the custom of group photographs was established and is now maintained.