The Collaborative International Dictionary of English v.0.48:

Micrography \Mi*crog"ra*phy\, n. [Micro- + -graphy: cf. F.
   micrographie.]
   1. The description of microscopic objects.
      [1913 Webster]

   2. Examination or study by means of the microscope, as of an
      etched surface of metal to determine its structure.
      [Webster 1913 Suppl.]