THE PHYLETIC MUSEUM AT JENA 95 
part was given by the civic authorities of Jena. With its 
contents the building will be made over to the University 
as their possession. It is 110 feet long, 52 feet wide, and 
65 feet high. The upper and lower floors will be occupied 
as storerooms and as apartments for assistants, and for ser- 
vants ‘The spacious halls on both main floors will receive 
a large portion, about one-half of the collection at present 
in the over-crowded Zoological Institute. The chief part 
of the collection will comprise phylogenetic objects, namely, 
preparations and views that elucidate racial history ; 
especially that of vertebrate animals, and that of men. 
The most important results which, during the last half 
century have been won in the departments of comparative 
anatomy and ontogeny, in paleontology, and in regard to 
the geographical distribution of animals will be given with 
short but lucid explanations, for the instruction of visitors. 
Added thereto will be represented a systematic collection 
of typical animals, showing the characteristic features of 
the great primary divisions of the animal kingdom, with 
their racial history. 
The chief aim of our Phyletic Museum will be kept in 
mind, namely, through close investigation of the doctrine 
of development, to advance those great truths to be learned 
only by comparative genetic nature-studies. And not 
intellectual instruction only, but eesthetic culture by these 
means will also be advanced. ‘The exhaustless treasures of 
beauty which everywhere lie hidden in nature, though 
most men are so little familiar with them, will thus be 
revealed to and made accessable by wider educated circles. 
The astonishing progress of biology in the nineteenth 
century not only extended our knowledge of the structure 
and growth of familiar forms of organic life, but has made 
known to us marvellous new forms, of whose abundance 
and beauty we before had no conception. We need only 
remember the fabulous world of minute life that the micro- 
scope has revealed in the kingdom of lower unicellular life, 
