<unk>  Josephovich<unk>  (August 7, 1868 - July 15, 1931) was a Russian economist and statistician of Polish descent. Some of his works in German language are published using the name<unk>  von Bortkewitsch<unk>  was born in St. Petersburg, Imperial Russia (today Russia) where he graduated in law in 1890.
In 1898 he published a book about the Poisson distribution, titled The Law of Small Numbers. In this book he first noted that events with low frequency in a large population follow a Poisson distribution even when the probabilities of the events varied. It was that book that made the Prussian cavalry horse-kick data famous. The data give the number of soldiers killed by being kicked by a horse each year in each of 14 cavalry corps over a 20-year period.<unk>  showed that those numbers follow a Poisson distribution. The book also examined data on child-suicides.  Some historians of mathematics have even argued that the Poisson distribution should have been named the<unk>  distribution."<unk>  attempted to predict how many pieces of artillery would overheat in an intensive battle. He failed in this because of his limited knowledge of thermodynamics and metallic composition of cannons.
In political economy,<unk>  is important for his analysis of Karl Marx's reproduction schema in the last two volumes of Capital.<unk>  identified a transformation problem in Marx's work which, if proven, would profoundly undermine Marx's claim to have provided a consistent account of capitalist economics. This work provided the basis of major elaborations by Joseph Schumpeter and Paul Sweezy among others.<unk>  died in Berlin, Germany.
Ladislaus Bortkiewicz
Fetendo
Eugen Bleuler
Culmen 
Pennyroyal
Chilblain
Camp Setebaid
Hip pointer