3 1884. ] Vestiges of Glacial Man in Minnesota. 697 
isweakened by two considerations: First, the cutting teeth in 
the two genera are not homologous ; second, the grinding series 
of molars, complete in Hypsiprymnus, is almost wanting in Thy- 
lacoleo, It evidently does not follow that because Hypsiprymnus 
isherbivorous Thylacoleo is so also. Professor Flower refers to 
the reduction of the molars in Thylacoleo as slightly compli- 
tating the problem, and concludes that the food of that animal 
may have been fruit or juicy roots, or even meat. It is difficult 
to imagine what kind of vegetable food could have been appro- 
priated by such a dentition as that of Ptilodus and Thylacoleo. 
_ The sharp, thin, serrate or smooth edges are adapted for making 
cuts and dividing food into pieces. That these pieces were swal- 
lowed whole is indicated by the small size and weak structure of 
_ the molar teeth, which are not adapted for crushing or grinding 
anything but very small and soft bodies, It is not necessary to 
‘uppose that the dentition was used on the same kind of food in 
the large and the small species. In Ptilodus medievus the diet 
may have consisted of small eggs which were picked up by the 
incisors and cut by the fourth premolars. In Zhylacoleo carnifex 
t might have been larger eggs, as those of the crocodiles, or 
‘ven the weaker living animals. The objection to the supposition 
that the food consisted of vegetables, is found in the necessity of 
wallowing the pieces without mastication. In case it should 
have been of a vegetable character the peculiar premolar teeth 
Would cut off pieces of fruits and other soft parts as suggested 
| P rofessor Flower, but that these genera could have been 
herbivorous in the manner of the existing kangaroos, with their 
Series of molars in both jaws, is clearly an inadmissible sup- 
Position, 
p Oas 
VESTIGES OF GLACIAL MAN IN MINNESOTA. 
BY MISS FRANC E. BABBITT. 
a (Continued from page 605, Fune number.) 
| iaia notch quartzes hitherto examined have been differentiated 
‘ pda peculiarities of distribution, worth while to enu- 
i this place, 
: First; 
dove 
hay there were Originally no quartzes afforded by the soil 
: , SO there were none yielded by that lying im- 
y below ; although it would naturally be expected that 
