PART I. 
A GENERAL CONSIDERATION OF THE STRUCTURE | 
OF THE RABBIT, 
DIVISIONS AND METHODS. 
Biology, the science or study of living organisms, includes 
several related sciences, the chief of which are Anatomy, the study 
of organized structure; Physiology, the study of function; and 
Embryology, the study of development. Anatomy, or Com- 
parative Anatomy, the latter referring to the comparative study 
of organisms, and Embryology are also considered either as 
divisions, or as practical methods, of Morphology, the general 
science of the evolution of form. 
The term “Anatomy” was originally applied to the dissection or 
study of the human body, and is still considered as referring more 
especially to the latter. Even in the early stages of biological 
science, however, the use of the term was extended to organisms 
generally; and afterwards, chiefly as a result of the introduction 
of the microscope as a new method of examining structure, it 
attained its present comprehensiveness as a term applying to the 
study of structure generally. 
It has been found convenient, especially in human anatomy, to 
distinguish as Gross Anatomy, the study of that kind of structure 
which is displayed by dissection, or is revealed by oe -eye 
appearances, and as Microscopic Anatomy, the study of finer 
structure through the application of the microscope; or, again, to 
distinguish as Special or Descriptive Anatomy, the study of the 
particular features of the organs of the body, and as General 
Anatomy, the study of its more fundamental composition. General 
Anatomy is practically equivalent to Histology, the latter con- 
sidering the body from the point of view of the structure and 
arrangement of its cells and tissues. 
These distinctions are of interest in the present case chiefly as 
defining more exactly the practical method and the kind of structure 
