[Illustration: ON THE RIGHT, BUILDING OF THE BOSTON SOCIETY OF NATURAL HISTORY; ON THE LEFT, ROGERS'S BUILDING OF THE MASSACHUSETTS INSTITUTE OF TECHNOLOGY.] "On account of the necessity of actually handling and dissecting specimens, the tickets issued for the succeeding lessons were limited, and at the six lessons on mineralogy and eleven on zoölogy there was an average attendance of about fifty-five. The materials for the course in zoölogy were gathered in sufficient abundance through the extraordinary facilities for collecting marine animals afforded by Prof. S. F. Baird, United States Commissioner of Fisheries; those for the course in botany were furnished with equal readiness and generosity by Prof. Asa Gray from his botanical garden at Cambridge." The society's attempt to introduce natural history into the public schools met with favor at the hands of the superintendent, Mr. Philbrick, and a committee of school principals was appointed, with Mr. James A. Page as chairman, who canvassed the teachers regarding this matter. Accordingly, in October, 1871, a circular was sent to teachers which said that lessons were to be given by "professors familiar with the object methods of teaching and skillful in the use of chalk." Seven hundred teachers signed this circular, and so signified their pleasure at the prospect of receiving such instruction. While Mr. Cummings was generously providing these courses of lectures exclusively for the benefit of teachers, Mr. John A. Lowell, trustee of the Lowell Institute Fund, made liberal provision for free courses on different branches of natural science, to which teachers were specially invited and which were well adapted to their wants, although not intended exclusively for them. During the winter of 1872-'73, on account of the large fire in Boston and the absence of Professor Hyatt in Europe, the lessons in The Teachers' School of Science were necessarily suspended. In the autumn of 1874 they were resumed and supported by renewed donations from Mr. Cummings. Mr. L. S. Burbank gave thirty lessons on minerals, and distributed the specimens used at the lectures among the teachers. These minerals were then used in the schools for instruction. This was virtually the introduction of the teaching of natural science in the public schools of Boston. The following winter Mr. Burbank continued his teaching by giving fourteen lessons in lithology to a class averaging ninety in attendance. One hundred sets of seventy-five specimens each were distributed, and many of these sets placed in collections of the city schools. "A supplementary course of field lessons about Boston was voluntarily conducted by Mr. Burbank, who had in his class this year seventy-five per cent of the members of the class in mineralogy of the previous year. This class included a large number of the busiest teachers of Boston and vicinity, and each member of the class was provided with