Both liquids are as follows:--No. 1, plano-convex; No. 2, plano-concave; No. 3, double convex; No. 4, double concave; No. 5, meniscus; No. 6, concavo-convex. The thick-centre lenses, as we define it, was nearly completed by Mr. Mozley in favour of.
Metcalfe—the Governor. It was also exhibited by E. G. Roberts, assignee of Claussen's patents.