Reproduced below are four pages of text from, Davis, Carl L. (1927) DEVELOPMENT OF THE HUMAN HEART FROM ITS FIRST APPEARANCE TO THE STAGE FOUND IN EMBRYOS OF TWENTY SOMITES, Contributions to Embryology, No. 107. Carnegie Instn. Wash. Publ. 380, Contrib Embryol., 19, 245-284.

Davis' description of the development of the human heart is illustrated with a plate showing the heart region in embryo 3709

 

  
   
   
   
   
Click to view plate 1 Click to view Fig 5C view Fig 36 view fig 36