This instrument suggested to Struve the abovementioned idea of employing a similar motion for the heliometer.
With special reference to the controversy concerning the Casket Letters, in addition to the article Casket Letters and the abovementioned works by Sir John Skelton, the following should be consulted: Walter Goodall, Examination of the Letters said to be written by Mary Queen of Scots to Bothwell (2 vols., Edinburgh, 1 754), which contains the letters themselves; William Tytler, Inquiry into the Evidence against Mary Queen of Scots (2 vols., London, 1790); John Whitaker, Mary Queen of Scots Vindicated (3 vols., London, 1788); F.
In all the abovementioned genera, with the exception of Hydra, the life-cycle is so imperfectly known that their true position cannot be determined in the present state of our knowledge.
There is the further possibility that creodonts may be directly descended from the carnivorous reptiles; a descent which if proved might introduce some difficulty with regard to the abovementioned theory as to the arboreal ancestry of mammals generally.
To understand the reasons that urged Bolivia to take this step it is necessary to go back to the abovementioned treaty of 1866 between Chile and Bolivia.