TRANSACTIONS OF SECTION D. 



193 



2. A Simple Mode of illustrating the Action of the Lungs. 

 By Professor Bickeeton. 



A LARGE bulged lamp-glass is turned 

 upside down, aud a three -holed 

 cork fitted into the neck ; a small 

 cork stopper is placed in the middle 

 hole, two glass tubes are fitted in 

 the other holes, and a small toy 

 balloon tied to each : these balloons 

 are inside the lamp - glass. The 

 cork is taken out of the central 

 hole, and the lamp -glass pushed 

 some distance into water; the cork 

 is then put in, and on lifting and 

 lowering the glass the balloons fill 

 and empty themselves, the water 

 acting as the diaphragm. 



3. Suggestions for securing greater Uniformity of Nomenclature 



in Biology. 



By Professor T. Jeffery Parker, B.Sc, F.E.S. 



The author discusses the advantages and disadvantages of 

 the rapidly-increasing terminology of the biological sciences, 

 especially in the department of morphology, and submits the 

 following proposals : — 



1. The appointment of a strong international committee to 

 define terms of general and fundamental importance, such as 

 the subdivisions of biological science, terms common to zoology 

 and botany, terms denoting position, &c. 



2. The issue of an authoritative historical glossary. 



3. The systematic record of new terms. 



4. 071 Specific Characters in the Skeleton of Apteryx. 



By Professor T. Jeffery Parker, B.Sc, F.E.S. 



The derivation of the various species of Apteryx from a 

 common ancestor being assumed, attention was directed to 

 the curious divergence of skeletal characters undergone by them 

 in the course of evolution, such characters being all connected 

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