. Journal and proceedings of the Hamilton Scientific Association. using thisdevice, by which the instrument can be turned to an object, althoughinvisible to the unaided eye, that can appreciate the time and laborsaved in the course of working with a telescope equatorially feel I am justified if I go out of my way here just to give aninstance of the truth of the old saying, Necessity is the mother ofinvention, and of comparing the happy position of our Presidentwith another astronomer in a humble sphere of life whom I knew,and had the honor of writing an account of his work in the tra
. Journal and proceedings of the Hamilton Scientific Association. using thisdevice, by which the instrument can be turned to an object, althoughinvisible to the unaided eye, that can appreciate the time and laborsaved in the course of working with a telescope equatorially feel I am justified if I go out of my way here just to give aninstance of the truth of the old saying, Necessity is the mother ofinvention, and of comparing the happy position of our Presidentwith another astronomer in a humble sphere of life whom I knew,and had the honor of writing an account of his work in the trans-actions of the Astronomical Society of Wales ten years ago. LikeDr. Marsh, he felt the need of graduated circles with his home-made telescope, but, alas, he was poor and could not afford to buythe orthodox, costly article of brass ; so he constructed them him-self out of slate ! Surely the first of their kind and last in read to minutes of arc, and are now preserved in the museumof Bangor city. But with finer tools, and consummate skill for an. IMKKIOK \11.\V i>l- liiK liuiiiiiM,. siitnviM. nir. ii\ k-in> h liKA^lIKAK I ;.
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Keywords: ., bookauthorha, bookcentury1900, bookdecade1900, booksubjectscience
