ber eaten by worms, but an opeu book in whicli men can read 

 the phüosophy of nature." The first room of Professor Herre- 

 ra's museutn reminds us of some gruesorae diagrraras that used 

 to be visible at South Kensington, showingj, by coloured squa- 

 res, cubes, and so forth, the amonnt of the various inorganic subs- 

 tances contaiueil in the human body, the chief diffHí-ence being 

 that thé method is here extended to the flesh of other animáis. 

 The idea of this room is to show the unity that pervades natu- 

 re, whether in chemical composition, in organic matter, in or- 

 ganic forcé, in vital phenomena, in the plan of organisation, in 

 origin end, or in the conditions and causes of evolution. The 

 next room displays the comparative physiology and anatomy of 

 animáis; the natural system of classification is treated with con- 

 tempt; the ideas of biology are better iilustrated by the asso- 

 ciation of animáis living under similar conditions or using si- 

 milar devices, by, the comparison of analogous rather than of 

 homologous organs, thus showing the numerous modifications 

 and specialisations that have been adapted to a single or to si- 

 milar ends. Room no. 3 is to show the various methods of re- 

 production, and all organs and funetions associated therewith. 

 In the next room distribution is dealt with, not, however, ae- 

 cording to any scheme hitherto proposed but considered as '' the 

 correlation betweefn the distributional áreas of prganisms and all 

 the general biological conditions;" thus, we have animáis from 

 warmregions, animáis from cold regions, alpino species, species 

 from great depths, species from deserts, species from caverns, 

 species from islands, species from forests, and so forth. Then 

 followexhibits showing the eorrelations between the present 

 fauna of certaiu counti'ies and their extinct fauna;^ Other ca- 

 ses exemplify migration, means of dispersión, and laws of geo- 

 graphical distribution. The next gallery is given up to evolu- 

 tion, and here Professor Herrera is frar^kly Darwinian, making 

 no mention of neo-Lamai-ekism, l»athmism, and other philoso- 

 phical schools Consequently, his exhibits are intended to show 

 such facts of n ature as the rapid multiplication of individuáis, 



