Sentence:  You know nothing about fixing the <WSD>lunar</WSD> rays into a ſolid ſubſtance, but you muſt not therefore ſay that this is impoſſible. It can be done, and I can do it. Theſe rays, reduced to a ſubtle powder, and blown on the ſurface of the infant brain, ſtimulate it in future life, by their quality of pricking. 
Meaning of the word marked with <WSD> tags:  Of, pertaining to, or resembling the Moon (that is, Luna, the Earth's moon); Lunar.