Complex sentence: Liebendörfer regularly published articles in a Malayalam news periodical and described the internal structure of the human body; in the opinion of Wilhelm Schlatter, the historiographer of the Basel Mission, the Indian doctors were not knowledgeable about this.
Split into simpler sentences: Liebendörfer regularly published articles in a Malayalam news periodical and described the internal structure of the human body. In the opinion of Wilhelm Schlatter, the historiographer of the Basel Mission, the Indian doctors were not knowledgeable about this.