THE BOTANISTS OF PHILADELPHIA. 377 



Pharmaceutical Association, Mr. Crawford has entered 

 heartily into the plan of making a check-list of Pennsyl- 

 vania plants, his herbarium containing many plants of very 

 local distribution. 



GEORGE MAHLON BERINGER. 



George Mahlon Beringer was born in the city of Phila- 

 delphia, February 3, 1800, and was educated in the city 

 schools, being graduated from the Central High School in 

 the year 1876. He immediately began the study of the 

 drug business with the well-known firm of Bullock & Cren- 

 sliaw, with whom he remained until 1892, when he pur- 

 chased the store of the late Albert P. Brown, in Camden, 

 New Jersey. He was graduated by the Philadelphia College 

 of Pharmacy in 1880, taking for the subject of his thesis 

 " Citrate of Caffeine." He began writing for the American 

 Jou.rnal of Pharmacy in 1882. His papers, numbering over 

 forty articles, are of a very general interest, covering 

 formulas of practical pharmaceutical interest for every 

 worker in the drug store, such as syrupus aurantii. syrupus 

 lactucarii, tinctura moschi, tinctura strophanthi, essence of 

 pepsin, solution of ma late of iron, mullein oil, an improve- 

 ment in Liebig's condensers, phenol sodique, and resin of 

 podophyllum. In chemistry, his papers include " The 

 Nature and Manufacture of Aristol," " Quinine Bimurias, 

 Bromoform, Determination of Melting Points," " Formula 

 for Liquor Carbonis Detergens," " The Four Chlorides," 

 " Ung : Boroglyceride," " Notes on the Oleo-Resins," and a 

 paper on " Oil of Bay," " Pimenti and Cloves," " Hypo- 

 phosphorous Acid," "The Tritration of Ammonium Car- 

 bonate," " Purification of Benzin, Aleates, Phytoxylin," and 

 one on " The Value of Ehrlich's Test in Urinalysis." 



