Sphereotype of a Lovely Gentleman & Woman

The top paragraph is a continuation of another process from the previous page

 

Here is the original description of the process, in the patent application:
https://patentimages.storage.googleapis.com/pages/US14946.png

 

I see the patent also refers to Cutting's ambrotype patent. This was one where two pieces of glass were adhered together, and may be part of the source of the floating effect.

http://en.wikipedia.org/wiki/James_Ambrose_Cutting

http://www.graphicsatlas.org/identification/?process_id=284