The human embryo undergoes a series of changes inside the womb.
"Once a Greech"
Evelyn E. Smith
All that he now learns in addition is that when such matter is wedded to life it undergoes marvellous transformations which in part at least we are able to recognize, but are wholly unable to comprehend.
"The Old Riddle and the Newest Answer"
John Gerard
In these we were not always unsuccessful, consequently we enjoyed several opportunities of watching the change of colour which that fish undergoes whilst it is dying; and though the description generally given of it is certainly indebted in some degree to the imagination of voyagers, I must confess that the transitions from blue to purple, and from purple to green, with all their intermediate shades, are extremely beautiful.
"The Campaigns of the British Army at Washington and New Orleans 1814-1815"
G. R. Gleig