OF ARTS AND SCIENCES. 



87 



TABLE IV. — Showing the Difference of Specific Gravity at 0° correspondinq 

 to the Common Difference of about 20° between the Boiling-points, and to the 

 Elementary Difference of CH. 2 in the C n H 2n Series. 



NOTE ON A MEMOIR BY C. SCHORLEMMER. 



There was found among Warren's papers, in the same portfolio 

 with the manuscript of the foregoing memoir, a printed copy of a 

 memoir " On the Normal Paraffins " (taken from the Philosophical 

 Transactions, 1872, Vol. CLXXIL), which had been presented to 

 Warren by its author, Dr. Schorlemmer. Upon the last page of 

 this presentation copy Warren had written in pencil some memo- 

 randa which, under the peculiar circumstances of the case, seem 

 to be worthy of being put upon record. 



For the sake of clearness, page 123 of Schorlemmer's memoir is 

 here copied, in quotation marks, together with the memoranda 

 which stand written upon that page of the memoir in Warren's 

 handwriting. 



It is to be observed that both the side-note, at the left of the 

 tabular matter, as printed on the next page, and the column of 

 figures headed "Difference found," at the right of the table, were 

 written by Warren. The asterisk also, affixed to the word 

 "Butane' in the table, and the foot-note to which this asterisk 

 refers, are copied from Warren's memoranda. 



