expressing motion by fixed drawings and descriptions. It occurred to me to make a drawing of the sage-blossom with its tilted stamen fastened on separately to show the movement. This I did. It proved to be a revelation to myself and I made several other sectional charts of flowers and of insects that same summer. They served to demonstrate ocularly and simply, without the slightest effort on the part of my audience, what had heretofore been presented only in difficult technical descriptions. There really seemed to be a new field for work, and I accepted the indications and concentrated my thought upon the theme.” A writer who had been an attendant at these lectures gives this description of them: “The lecture describes some general principles about a group of flowers and their associated insect-visitors, and while the listener is endeavoring to induce his imagination to form some picture of the process, Mr. Gibson steps to a screen, hangs up and unfolds a beautifully executed sketch of the flower, and gives an ocular demonstration of the thing he has just described. One sees the bee crawl into the sage-blossom, tilt the pivoted stamens, and come out with the pollen upon his back, which burden he is now ready to carry to another blossom, upon whose pistil he partly unloads it. The same busy bee creeps into the pogonia and straightway two powdery anthers are clasped to his side, leaving their visible deposit of yellow dust. The orchids are made to clap sticking-plasters upon their visitors, or to hurl bombshells of pollen on their heads. There is no room for failure to understand. The whole process is demonstrated before the sight, by a mechanism which works to a charm, a visible and artistic unfolding of the most subtle operations of the plant and insect world.” An instant and complete success awaited this new venture. Everywhere there was a demand for the lectures, and they were received with a popular interest rather surprising when one considers how thoroughly scientific they were. The farmers of his own neighborhood; the members of sedate city clubs; school-children and society-women,--all classes and types of people with any appetite for knowledge, or any sense of the wonderful in nature, joined in the applause which greeted Gibson’s appearance as a lecturer upon natural history. He repeated upon the platform the success he had won as a writer and an artist. He established his reputation as a master in scientific demonstration. It was truly said of him that the field he entered in these lectures “had not since the days of Agassiz been cultivated with such success as by Mr. Gibson.” As a popular teacher of scientific fact no man in this country since Agassiz gained such a hold or did such a work as he. There is no doubt that if he had lived he would have won an international renown in this field as well as that of art. [Illustration: _The Writing Desk_ _Brooklyn Studio_] CHAPTER VI THE ACCIDENT OF AUTHORSHIP