LINNAEUS AND A. J. RETZIUS 245 
aspect were for Sweden, Linne and his pupils were for 
natural science. Each nation has had its heroic age 
in the world’s history; and each science which has 
won development has had its chivalrous period. In 
botany, it is the Linnean period which has left its 
mark, and now we may with reason, and with slight 
alteration, quote a poet’s words: 
ji 
There is no age which lets its memories sleep: 
No land like ours, with memories so deep! 
