Fine art silver halide prints are, in fact silver bromide or silver chloro-bromide  light sensitive crystals suspended in a hard gelatin “emulsion” coating on high-grade cotton fibre paper.  

When this light-sensitive silver halide-gelatin “emulsion” coating is exposed to the light projected through a negative in the darkroom a latent image is formed that is then developed in chemicals that produce the image of the original scene.  

Think of the emulsion as nothing more than hard “Jello” with light-sensitive crystals dispersed throughout this 

“Jello .”  This emulsion is coated on high-grade cotton fibre paper in a manufacturing process that takes place in extreme darkness where the coating is dried and hardened on the paper,  cut to size and packaged in light-tight boxes for distribution.

Gelatin prints are silver halide prints.  The two key ingredients are inextricably tied together that are the basis of black and white fine art prints collectors highly value–that Marc Schuman and other film-based photographers continue to produce.”