chicken
Diseases and Enemies of Poultry
While he graduated with a degree in agriculture at Cornell, it was summer work on combating contagious diseases in cattle that led to Dr. Leonard Pearson’s (1868-1909) interest in veterinary medicine. Upon graduating from the University of Pennsylvania’s veterinary school, Dr. Pearson continued his work on protecting cattle and would eventually rise from Professor of Medicine to Dean of the Veterinary School to Pennsylvania’s State Veterinarian. Expanding his research into poultry, Dr.