Book 4 — BOOK II, ODE 3.
John Conington translation
Where poplar pale and pine-tree high.
I have translated according to the common reading "Qua pinus … et obliquo," without stopping to inquire whether it is sufficiently supported by MSS. Those who with Orelli prefer "Quo pinus … quid obliquo," may substitute—
Know you why pine and poplar high Their hospitable shadows spread Entwined? why panting waters try To hurry down their zigzag bed?