Sentence:  The planet Uranus, in like manner, detached, in process of time, a satellite, followed, in the progress of the cosmic ages, by seven others. A slow disturbing influence, supposed also to be recognized in the <WSD>Neptunian</WSD> system, has manifested itself in the Uranian, in an excessive obliquity of the plane of the Uranian satellites—an obliquity which considerably exceeds a right angle, [...] 
Meaning of the word marked with <WSD> tags:  Of or pertaining to the planet Neptune.