And here one may note a curious comparison which can be made between this [ascidian] life-history and that of many a respectable pinnacle and gargoyle on the social fabric. Every respectable citizen of the professional classes passes through a period of activity and imagination, of "liveliness and eccentricity," of "Sturm und Drang." He shocks his aunts. Presently, however, he realizes the sober aspect of things. He becomes dull; he enters a profession; suckers appear on his head; and he studies. Finally, by virtue of these he settles down—he marries. All his wild ambitions and subtle