In the course of a note on Aen. VIII. 86 sq. by Dr. J. W. Mackail , the Servian interpretation of line 96 is supported with the observation that 'note should be taken of Virgil's distinctive use of the ablative. “Placidoaequore siluas” in his language is practically equivalent to “placidas aequoreas siluas” just as “pictas abiete puppes” is to “pictas abiegnas puppes” or “uasta uoragine gurges” to “uastus uoraginosus gurges.”’.