LIFE AND STUDY IN EUROPE 43 



Friday June 17. In morning got over to our lodgings, 

 adjusted accounts to some extent, entered the Laboratory and 

 got agoing on Ultramarine, bought Will's Outlines, 2d ed. 



Saturday June 18. Heard Dr. Erdmann's lecture. Worked 

 in Lab. 3 hours of morning. Dined at "Hotel Garni Kaiser 

 Oesterreich. " In P.M. called on Hof. Morgenstern and were 

 fairly received, but must call again with testimonials. Called 

 at Hugershoff's establishment. 



Sunday. Walked in Rosenthal. 



Monday 20th. Attended Dr. Erdmann's Vorlesungen, and 

 went with him and Weld to Hofrath Morgenstern, where 

 Weld presented Uncle Ben's Emphfehlungs Brief and the 

 Hofrath talked like it. Returned to Lab., finished Ultramarine. 

 Visited Hugershoff and made a few purchases. 



Tuesday 21. Worked in Lab. on an etwas seltener Sub- 

 stanz. Purchased hardware, etc. 



Wednesday. Continued work and developed the Haupt- 

 sache of Pechblende, Uranoxyd. Found besides Lead; 

 Bismuth, Iron, Alumina, Lime, Magnesia, Silica. Ordered 

 Lamp from Hugershoff's. 



Thursday. Things as usual. Prof, gave me an organic 

 salt, which I soon found to be picrate of potash. Then came 

 a mixture of Propylic, Butyric and Valerianic Acids, or some 

 of them. Concluded from behavior of silver salts that it is 

 mostly Propylic in combination with Soda. Bought a fine 

 umbrella at 4 Th. Weld and I walked over to the Polizei and 

 were allowed to come ' ' Morgen. ' ' Letter to Uricoechea. 



Friday — June 24. St. Johannis Day. Went to Laboratory 

 and found it shut. Returned, ordering Lowig, and Lehmann's 

 Phys. Chem. The former was sent me. Found Butyric and 

 Valerianic acids well treated of. Propylic briefly. Made 

 improved blowpipe tongs, after Weld's suggestion, all but 

 platina points. Received permission of residence from the 

 police. Walked out into the Johannis Thai, the "Gottes 

 Acker's" etc. 



