283 
OWEN’S POSITION IN 
the obvious conclusion as to their ‘ unity of orga- 
nisation.’ A child may see that skull ‘ answers ’ to 
skull ; spinal column to spinal column ; ribs to 
ribs ; breast bone to breast bone ; wings to arms ; 
and legs to legs, in the two. Later on, Peter 
Camper, a capital artist as well as an accom- 
plished anatomist, was in the habit of amusing, 
while he instructed, his class by showing what 
slight strokes of his chalk sufficed to turn the 
outline skeleton of a man into that of a dog or of 
an ox ; and how these could be metamorphosed 
into reptilian or fish forms, without disturbance of 
I their fundamental features. 
The cultivator of botany, who went beyond 
the classification of ‘ hay,’ became familiar with 
facts of the same order. Indeed, flowering plants 
fairly thrust morphological ideas upon the ob- 
server. Flowers are the primers of the morpho- 
logist ; those who run may read in them uniformity 
of type amidst endless diversity, singleness of 
plan with complex multiplicity of detail. As a 
musician might say, every natural group of 
flowering plants is a sort of visible fugue, wan- 
dering about a central theme which is never 
forsaken, however it may, momentarily, cease to 
be apparent. 
Vicq d’Azyr, following the line of strict ana- 
tomical observation and critical comparison, set 
forth the correspondences of plan observable in 
the limbs of the higher vertebrates, and may be 
