The Odes and Carmen Saeculare of Horace
Chapter 14
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?