Orders of infinity is Hardy’s monograph from 1910 on the work of Du Bois Reymond. From the preface:
There is, in Du Bois-Reymond’s original memoirs, a good deal that would not be accepted as conclusive by modern analysts. He is also at times exceedingly obscure; his work would beyond doubt have attracted much more attention had it not been for the somewhat repugnant garb in which he was unfortunately wont to clothe his most valuable ideas.
A kind of library 