1878.] ^kD 



and succeeded perfectly. In oxydising I used the "chromic acid "mix- 

 ture, and after obtaining the chlorine-substitution acids I saponified them 

 with caustic soda. The preparation shown is, therefore, a mixture of soda 

 salts of these chlorine-substitution compounds of the higher fatty acids 

 As these compounds cannot be made by such reaction from the higher 

 " paraffins, " their formation proves conclusively the presence of the higher 

 " olefines. " 



Prof. Houston read a joint paper entitled " On the cir- 

 cumstances influencing the efficiency of Dynamo-electric 

 machines, hy Prof. Houston and Prof. Thompson. 



Prof. Haupt read a paper entitled •' On the scales of Maps" 

 with tables. 



Pending nomination No. 871 was read. 



Prof. Houston's resolutions, offered October 4, were called 

 up for consideration, and after a discussion of the subject by 

 Prof. Barker, Prof. Houston, Prof. Thompson, Dr. Konig, 

 and other members present, it was 



Resolved, That the fourth and fifth paragraphs of page 728 of No. 101 of 

 the Proceedings, being portions of the minutes of the meeting of June 21st, 

 1878, be corrected to read as follows : 



"Prof. Houston exhibited a microphone relay invented and made by 

 himself and Prof. Thompson of the Philadelphia High School, to be ap- 

 plied to the articulating telephone." 



"Prof. Barker exhibited a suite of Mr. Edison's instruments invented 

 and made by him during the last year or two, and stated that, in his opin- 

 ion, in their inventions so far as they involve similarity of principle, Mr. 

 Edison had priority over Mr. Hughes." 



It was then, on motion of Dr. LeConte, resolved that the 

 Index on page 730 be corrected accordingly. 



Prof. Sadtler referred to the reading of a letter from Prof. 

 Morton to the Secretaries, at the last meeting, and said that 

 he had already himself made due acknowledgment to Prof. 

 Morton before the Society at the meeting of August 16th, 

 1878, as the minutes show. 



And the meeting was adjourned. 



