The Philosophical magazine; a journal of theoretical, experimental and applied physics . could hardlyhave been less than 63 inches in length. The middle of the shaftis cylindroid. Its transverse section is of a subtrigonal figure, andpresents a large coarselj* cancellated core, enclosed in a compactcortical ring. The bone is considerably expanded towards the twoextremities; the distal articular surface is oblong, and di\-ided intoa pair of condyles by a very shallow vertical groove; below, theanterior border, in its proximal half, is much wider than the cor-responding portion of the posterior
The Philosophical magazine; a journal of theoretical, experimental and applied physics . could hardlyhave been less than 63 inches in length. The middle of the shaftis cylindroid. Its transverse section is of a subtrigonal figure, andpresents a large coarselj* cancellated core, enclosed in a compactcortical ring. The bone is considerably expanded towards the twoextremities; the distal articular surface is oblong, and di\-ided intoa pair of condyles by a very shallow vertical groove; below, theanterior border, in its proximal half, is much wider than the cor-responding portion of the posterior border, and is flattened and pro-duced downwards into a ventrally projecting crest; and the distal halfof this border forms a thin, rough crest, projecting forwards. Thepresence of these crests distinguishes the present humerus fromthose of PeJorosat(ri(s and of Ccteosaurus ; but the generalcorrespondence of the bone with the humerus of the latter speciesleads the author to refer it provisionally to a species of Cefeosaiirns,which he proposes to name C. Jmmero-cristatus,. [ 15« ]XXV. InteUtgence and Miscellaneous Articles. ON A SIMPLE OCULAR-SPECTUOSCOPE TOR F. ZOLLNER. ^PHE anuexed figurf sIkiws, of the uatunil size, the section of a•*- coinpiMidious lonu ol star-spoctroscopo in combination withthe ocnhir of a 1clesco])e. It consists of a small direct-vision prism lixedin a tube CD, thedispersion of ?\\hich is abonteqnivalcnt to that of the sj-s-tem of prisms of a Browningminiatnro spectroscope. Thetnbe C 1) is movable in a se-cond tnbe, A B, which can bescrewed upon the head of theeyepiece and contains a cylin-drical lens L of about 100millims. focal distance. Asthe length of the line of lightproduced by this lens depends both on its focal distance and alsoon the dimensions and proportions of the optical parts of the tele-scope, it is advisable to haA e in readiness several cylindrical lensesof different lengths of focus, so as to be able to employ the
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