Sentence:  If to theſe we add the inconveniences inſeparable from <WSD>mercurial</WSD> preparations, and which are always the conſequences of their uſe; if we conſider the ſmall number of patients to whom mercury may be exhibited with ſafety, [...] the uſe of <WSD>mercurial</WSD> medicines will be confined within very narrow limits. 
Meaning of the word marked with <WSD> tags:  Of or pertaining to the element mercury or quicksilver; containing mercury. (from 16th c.)