Zoology. 



■:,;n 



t would be interesting to carry the experiment further and see if a 

 on of the Manx cat with one of her own race would result in restor- 

 with the same regularity with which she lost it, the power to pro- 

 « her own type. (Revue Scientif. T. 4, 1895.) 

 \ case of Renal Abnormality in the Cat.— Anomalous condi- 

 1 of the renal organs and accompanying blood vessels was recently 

 I* disclosed in a dissection in this labora- 



tory. The accompanying diagram ex- 

 plains the phenomenon. The left 

 kidney was a miniature of the right 

 though functional. The dimensions of 

 the right kidney in another subject of 

 equal size as the specimen under dis- 

 cussion were found to be— length 3 cm., 

 width 2 cm. and dorso-ventral thick- 

 ness^ mm. ; the left os is natural 

 being slightly smaller than this. The 

 dimensions just given may be regarded 

 as normal. 



In the subject whose renal anatomy 

 has been here figured, the measure- 

 ments of the right kidney were as 

 follows : length 4 cm. breadth 2 i cm. 

 and thickness (dorso-ventral) 19 mm., 

 considerably above the normal as one 

 would expect when the extremely small 

 size of the left kidney is considered. 



follows: length 12 mm., breadth 8 

 mm., and thickness or dorsoventral 

 2-third the dimensions of the right kidney. 

 Upon hardening, staining and sectioning in the usual way the 

 glomeruli and uriniferous tubules were found to be normal though, the 

 presence of a small amount of fat in the kidney was noted. The histo- 

 logical condition of the kidney and the presence of the left ureter, which, 

 though smaller than the right was clearly functional, proved that the 

 left kidney was of value in the vegetative processes of the organism. 

 The right renal artery (m) was, as one would expect larger than the 

 left (ra). The postcava (pc) in this cat was divided very far forward 

 in the lumbar region to form the common iliac veins, causing the left 



