Plate XXXV. 



(Top) Dr. S. G. Gibbons holding the baleen plate of a plankton-feeding whale. Note the t"ringes 



which filter the plankton from the water. 



Photograph by James Frascr 



(Boltoni) A view of the upper jaw of a fin whale showing the baleen plates in position. This 

 particular whale had a large tumour — marine creatures are not immune from such afflictions! 



Photograph by D. F. S. Raitt 



