Nearly 95% were Slovenes and 5% Germans, while 99% of the population belonged to the Roman Catholic Church.
According to nationality, 71.54% were Germans, and 28.39% Slovenes, mostly settled in the districts adjoining the Slovene province of Carniola.
Among the Slovenes of Istria and Carniola there were also numerous arrests, and the Matica Slovenska, the chief Slovene literary society, was dissolved and its funds confiscated.
This formed a natural complement to the unanimous declaration of the Serbian Skupstina in Dec. 1914 for a union of Serbs, Croats and Slovenes in one State.
The jealously guarded secret was discovered by Mr. Supilo in Petrograd within a few days of the signature of the treaty, and the main facts becoming known in Austria-Hungary, were skilfully exploited by her to rally the Croats and Slovenes in defence of their national territory.