Complex sentence: Shortly before his death, Southard wrote and presented "Non-dementia non-praecox: note on the advantages to mental hygiene of extirpating a term"; he did not have the opportunity to see it published.
Split into simpler sentences: Shortly before his death, Southard wrote and presented "Non-dementia non-praecox: note on the advantages to mental hygiene of extirpating a term". He did not have the opportunity to see it published.