Charles T. Jackson and William T.G. Morton Patented the "Ethereal Solution of Opium" of Elton Romeo Smilie.

The Jackson-Morton 1846 patent for surgical insensibility by means of sulphuric ether states that opiates can be added to the ether and co-administered by inhalation. The erroneous concept that ether could carry opiates in its vapor phase at room temperature was proposed in Boston in 1846 by Elton Romeo Smilie (1819-1889), who believed that the opiates were more important than the ether vehicle.