98 BIOLOGY AND ITS MAKERS 
animal kingdom.” He was working under the influence of 
Cuvier, who, some years earlier, had founded the science of 
comparative anatomy and whom he recognized as his great 
exemplar. His work is dedicated to Cuvier, and is accom- 
Fic 29.—REAuMUR, 1683-1757. 
panied by a letter to that great anatomist expressing his 
thanks for encouragement and assistance. 
Straus-Diirckheim (1790-1865) intended that the general 
considerations should be the chief feature of his monograph, 
but they failed in this particular because, with the further 
developments in anatomy, including embryology and the 
cell-theory, his general discussions regarding the articulated 
