definitely standardized through the works of Gion Cahannes, who published Grammatica Romontscha per Surselva e Sutselva in 1924, followed by Entruidament devart nossa ortografia in 1927. The Surmiran dialect had its own norms established in 1903, when the Canton agreed to finance the school book Codesch da lectura per las scolas primaras de Surmeir, though a definite guideline, the Normas ortograficas per igl rumantsch da Surmeir, was not published until 1939. In the meantime, the norms of Pallioppi had come under criticism in the Engadine due to the strong influence of Italian in them. This led to an orthographic reform which was concluded by 1928, when the by Cristoffel Bardola was published. A separate written variety for Sutsilvan was developed in 1944 by Giuseppe Gangale. Around 1880, the entire Romansh-speaking area still formed a continuous geographical unit. But by the end of the century, the so-called "Central-Grisons language bridge" began to disappear. From Thusis, which had become German-speaking in the 16th/17th century, the Heinzenberg and Domleschg valleys were gradually Germanized over the next decades. Around the turn of the century, the inner Heinzenberg and Cazis became German-speaking, followed by Rothenbrunnen, Rodels, Almens, and Pratval, splitting the Romansh area into two geographically non-connected parts. In the 1920s and 1930s the rest of the villages in the valley became mainly German-speaking, sealing the split. In order to halt the decline of Romansh, the Lia Rumantscha began establishing Romansh day care schools, called , beginning in the 1940s with the aim of reintroducing Romansh to children. Although the had some success – of the ten villages where Scoletas were established, the children began speaking Romansh amongst themselves in four, with the children in four others acquiring at least some knowledge of Romansh – the program ultimately failed to preserve the language in the valley. A key factor was the disinterest of the parents, whose main motivation for sending their children to the Scoletas appears to have been that they were looked after for a few hours and given a meal every day, rather than an interest in preserving Romansh. The other factor was that after entering primary school, the children received a few hours a week of Romansh instruction at best. As a result, the last Scoletas were closed in the 1960s with the exception of Präz, where the Scoleta remained open until 1979. In other areas, such as the Engadine and the