Record. xxv 



compound. All the facts known indicate that these two iodides 

 of acetylene are stereo-isomers, and that their configuration 

 must be represented by the stereometric formulas. 



H I H I 



II and II 



r H H^ ^i 



Since Dr. Keiser has found that the solid acetylene diiodide 

 can be converted into fumaric acid, it would follow that the 

 first of the two formulas would represent the solid acetylene 

 diiodide and the second one the liquid diiodide. Further 

 experiments upon these compounds are under way, and an 

 attempt will be made to convert the liquid diiodide into 

 maleic acid. 



Dr. L. Bremer demonstrated some tests for glucose by 

 means of anilin dyes, showing that nearly all of the " alka- 

 line " anilin dyes, when rendered basic by the addition of 

 sodium hydrate, become decolorized, or have their color 

 greatly modified, on heating, in case glucose is present. The 

 reactions shown were especially pretty in the case of methylene 

 blue and safranine. 



Professor F. E. Nipher announced that he had nearly com- 

 pleted preparations for the measurement of wind pressures on 

 the sides of the main building of Washington University. The 

 pressures are to be measured at various points along the west 

 end of the building, having a width of about 50 feet, and along 

 the north front, which is something over 200 feet in length. 

 Silmultaneous measurements of wind pressure, and wind 

 velocity and direction, will be made. The method used is that 

 tested by him on the trains of the Illinois Central Railroad 

 during the summer of 1897. The method was described in 

 No. 1, Vol. VIII, of the Transactions of the Academy. An 

 invitation was extended to members to visit the University 

 and inspect the apparatus. 



Professor H. Aug. Hunicke spoke briefly on some observa- 

 tions which he had recently made on the boiling temperature 



