xxviii Trans. Acad. Sci. of St. Louis. 



putting it in communication with foreign societies of learning, and securing 

 an exchange of publications, althoujih the Academy had little to offer. The 

 result was the accumulation of the valuable library of science now owned 

 by the Academy, and which, even in his day, was a thiug of which St. Louis 

 might well be proud. He always examined all of our exchanges as they 

 were received, and at each meeting he made a report to the Academy, out- 

 lining the ground covered t^y the more important works, and giving a gen- 

 eral summary of the results reached. We still have on our order of bus- 

 iness the Report of the Corresponding Secretary, which dates back to his 

 time. 



During the Civil War and the years which followed, the interest of the 

 public in the work of the Academy was at a low ebb. He was one of the 

 few citizens of St. Louis whose constant presence at the meetings gave 

 assurance that there was still hope. 



Your committee to wbom was referred the taking of suitable action in 

 commemoration of his services to the Academy feel that we owe to him and 

 to those who labored with him a debt of gratitude which we can only com- 

 pensate by actively continuing the work which he and his companions so 



worthily began. 



Francis E. Nipher. 

 Enno Sander. 

 G. Baumgartbn. 



The Secretary reported that Dr. Amos Sawyer had pre- 

 sented to the Museum of the Academy the specimens and 

 sketches used in illustration of his communication on Ethno- 

 graphic life lines left by a prehistoric race, presented at the 

 meeting of March 4, 1901. 



Mr. John S. Thurman delivered an interesting address on 

 the many industrial uses now made of compressed air, illus- 

 trating his remarks by apparatus in operation, including elec- 

 tric motor air compressor, compressed air auger, drill, disin- 

 fecting atomizer, sculptors' and stone-cutters' tools, carpet 

 renovators, etc., and a set of lantern slides showing the prac- 

 tical uses made of these and other implements and machines 

 operated by means of compressed air. 



Dr. Theodore Kodis exhibited, under the microscope, slides 

 illustrating a new method of staining brain tissue, whereby, 

 in four or five days, it has proved possible to prepare single 

 or double stained preparations containing nerve cells with the 

 dendrides of the latter brought out by a direct stain, instead 

 of being differentiated merely as amorphous silhouettes, as is 

 the case with the much slower Golgi process commonly em- 

 ployed. It was stated that the material is treated before sec- 



