Mineral salts pyridone broth is a selective medium for bacteria that can metabolizepyridone[?] (which is an unusual carbon source that only a select few types of bacteria can use). This medium is used to isolate bacteria belonging to the Arthrobacter genus among other bacteria genera.
... Maryland destroys over 1,500 buildings in 30 hours.
February 8 - Japanese surprise attack on Port Arthur (Lushun)[?] starts Russo-Japanese War
February 23 - For $10 ...