The Literature of Ozone. 137 



IV. — The Literature of Ozone and Peroxide of Hydrogen. 

 Second Memoir, including : 



I. HISTORICAL-CRITICAL RESUME OF THE PROGRESS OE DIS- 

 COVERY SINCE 1879. 



II. INDEX TO THE LITERATURE OF OZONE, (1879-1883). 



III. INDEX TO THE LITERATURE OF PEROXIDE OF HYDROGEN, 



(1879-1883). 



By Albert R. Leeds. 



Read December 17th, 1883. 



Preface. 



At the meeting of the Chemical Section of the N. Y. Academy 

 of Sciences, held June 12th, 1880, I had the pleasure of present- 

 ing to the Academy a first Memoir upon " The Literature of 

 Ozone and Peroxide of Hydrogen." This memoir consisted of 

 four parts. 1st, A historical and critical essay upon the " Lines 

 of Discovery in the History of Ozone," from the first observation 

 of Schonbein in the year 1840, to the facts made known in the 

 earlier portion of the year 1879. This prefatory essay discussed 

 under separate sections, the original discovery of ozone, its 

 sources and its properties : — also, the nature of the constituent 

 matter of ozone : — finally, the exact nature of the relations exist- 

 ing between ozone and ordinary oxygen. 



The second part of the memoir was an " Index to the Litera- 

 ture of Ozone (1785-1879). This memoir was drawn up on the 

 plan suggested by my friend and predecessor as Corresponding 

 Secretary of the Academy, Dr. H. Carrington Bolton. Dr. Bol- 

 ton had been led, during the course of his classic investigations 

 upon the Fluorides of Uranium (Berl. Akad. Ber., 1866, 299), 

 to prepare for his own more exact knowledge, a partial index to 

 the literature of uranium. In the hope of saving future investi- 



