40 Comments of the Relationship of Inbred Strains to the Genus Mus
Michael Potter

41 Brief Review of European House Mice
Joe T. Marshall

42 Genetic Heterogeneity of Spanish House Mice (Mus musculus Complex)
Richard D. Sage

43 Biochemical Polymorphisms in Wild Mice
Verne M. Chapman

44 The Extent of Allelic Diversity Underlying Electrophoretic Protein Variation in the House Mouse
Francois Bonhomme and Robert K. Selander

45 Cytogenetics
Orlando J. Miller and Dorothy A. Miller