SEVENTH ANNUAL RECEPTION. 495 



2. Artificial Indigo (German). Exhibited by Kuttroff, 



PiCKHARDT & Co. 



a. Specimen of Indigo J extra, made by the Badische Ani- 



lin and Soda Fabrik. 



b. Woolen cloth dyed with Indigo J extra. 



3. Artificial Indigo (French). Exhibited by Dr. Harold 



Fries. 



a. Specimen of artificial Indigo, made by the Societe Chi- 



mique des Usines du Rhone. Process of M.'Monnet, 



b. Samples dyed by artificial Indigo. 



For comparison, Samples of Natural Indigo. Exhibited 

 by the Chemical Department of Columbia University. 



4. Collection of recent Synthetic Perfumes of some Valua- 



ble Raw Materials for Perfumery. Exhibited by 

 Messrs. Fritzsche Bros. (Branch of Schimmel & Co.). 



a. Synthetic Oil of Cassia, " Schimmel & Co." (Cinnamic 



Aldehyde). For comparison : Oil of Cassia, natural, 

 and Oil of Cinnamon, Ceylon, natural. 



b. Synthetic Oil of Hyacinth, "Schimmel & Co." Ex- 



tract according to old formulas before this new syn- 

 thetic was discovered. Extract in which this new 

 synthetic is used. 



c. Synthetic Oil of Jasmine, "Schimmel & Co." Extract 



according to old formulas. Extract in which new 

 synthetic is used. 



d. Synthetic Oil of Neroli, "Schimmel & Co." For com- 



parison : Oil Neroli, Petale, natural, from Orange 

 Flowers. Cologne made with natural oil. Cologne 

 made with artificial oil. 



e. Synthetic Oil of Ylang Ylang, " Schimmel & Co." Oil 



of Ylang Ylang, natural (Orchid Flowers) from 

 Manila. Extract from natural oil. Extract with 

 artificial oil. 

 f . Cumarin : . , .' / 



For comparison Tonca beans. 



