that its location made it necessary for a large proportion of the French prisoners that were taken into Prussia to pass through it. The number of deaths per 10,000 inhabitants in the various Governmental Districts of Prussia is indicated by the following table (the districts which introduced compulsory vaccination in the year 1870 are designated with an asterisk): _Governmental District._ 1870. 1871. 1872. Königsberg 3·5 24·5 37·8 Gumbinnen 4·1 9·7 40·0 Danzig 2·8 42·4 67·6 Marienwerder 3·7 17·7 76·2 Berlin 2·1 63·1 31·4 Potsdam 1·8 25·8 28·7 Frankfurt 0·1 18·6 40·0 Stettin 1·6 29·9 21·4 Köslin 2·2 12·2 36·7 Stralsund 0·2 34·0 3·9 Posen 6·0 48·3 58·0 Bromberg 5·3 24·1 86·6 Breslau 3·1 27·5 33·6 Oppeln 1·7 22·5 42·1 Liegnitz 0·5 11·2 16·8 Magdeburg 0·6 27·5 16·3 Merseburg 1·0 28·8 20·2 Erfurt 1·4 25·3 14·4 Schleswig-Holstein* 0·2 18·0 5·0 Hanover* 0·3 5·3 8·8 Hildesheim* 0·1 13·8 19·6 Lüneburg* 0·2 7·8 6·5 Stade* 1·3 5·6 4·9 Osnabrück* 0·3 6·0 0·8 Aurich* 0·0 5·4 1·1 Münster 0·3 11·6 10·8 Minden 0·2 13·4 8·9 Arnsberg 0·4 39·1 33·8 Cassel* 0·5 9·0 6·2 Wiesbaden* 1·7 9·7 2·5 Coblenz 1·2 22·8 6·6 Düsseldorf 0·3 32·9 20·5 Cologne 1·4 14·6 2·8 Trèves 2·5 34·0 3·1 Aix-la-Chapelle 0·8 14·5 7·8 Hohenzollern 1·7 19·9