Treatises (6)
I believe the answer is:
essays
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">treatises</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for essays that I've seen before include "Makes experimental attempts" , "Tries the writings" , "texts" , "Compostions and tracts" , "Makes attempt to do short pieces of writing" .)