956 The American Naturalist. [November, 
and some nuclei. But few details as to the stratification or formation 
of the deposit are given in the account published in Cosmos (Sept. 12, 
1896, P. 211) and as nothing is said about hammer-stones, and flint 
chips, we are left to wonder whether the place represents a paleolithic 
workshop such as Messrs. Spurre]l and W. G. Smith found at Crayford 
and Caddington, England or not. Meanwhile the excavation which 
we are told is to be continued, if studied with care and without bias 
may affect the validity of the French subdivisions (Chellean Mous- 
terian, Solutrean Magdalenian) of the Palzolithic period in Central 
France. Judged by the shape of the flint blades found with the horse 
bones, M. M. Chauvet and Riviere call the deposit Chello-Mousterian 
while hardly a mile away, we have Laugiere Haute classified as show- 
ing Magdalenian above Solutrean culture layers, with Laugiere Basse, 
Cro-Magnon and Gorge d’Enfer floored with Solutrean only. The 
rock shelters of Le Moustier (Moustierian) and La Madeleine (Mag- 
dalenian) are not far distant and the question is whether all these differ- 
ent geological epochs supposed to indicate intervals of thousands of 
years, varying stages of human culture and changes in animal life 
can be justly established at this remarkable neucleus of ages where 
one more subdivision is proposed to be added to the list of culture 
layers represented in an area of a few square miles and based on differ- 
ences in flint chipping, and variations not universally agreed to, in the 
sequence of animal life. 
Chipped Flint blades from Somali Land.—Mr. H. W. Seton- 
Karr who presented to the British Association for the Advancement 
of Science at Ipswich, England in 1895 several heavy ovate blades of 
chipped flint from Somali Land, has brought more recently from the 
same region others (referred to in Proceedings of Royal Society, Vol. 
LX, no. 359, p. 19). Often well worked, considerably patenated, and 
resembling in shape and make, the drift blades of England and France 
they appear to have been found not in situ but on ths surface, mostly 
along water courses where rain or wind had bared them of surrounding 
earth. No excavations were made to ascertain their position with refer- 
ence to the surrounding geological strata, and no association appears to 
have been established with the remains of animals living or extinct. 
Nothing is said of Hammer-stones or chips that might have testified to 
the existence of blade workshops at the sites, and nothing as yet save 
the appearance of the blades (some of which are worked only on one side 
after the French Moustier pattern) has been presented to warrant us in 
setting back the date of these relics to the date of the similar shapes 
associated with the Mammoth and Rhinocerus in the Somme Valley- 
