ultramaximum

— The action of each force is considered under several headings; light, for example, being considered as to its chemical action, its effect on the general functions of the organism and its action in controlling the locomotion (phototaxis); and the text is illustrated by numerous well-chosen figures as well as by several tables of which there may be especially mentioned No. XVIII., which gives the nature of the response to light of the various forms which have been experimented upon in this connection; No. XIX., which gives the ultramaximum temperature for numerous organisms; No. XX., which similarly gives the ultraminimal temperatures, and No. XXI., which is a list of species found in Hot Springs with the conditions under which they occur. The author’s judgment in the treatment of his subject is excellent, as he has confined himself for the most part to a judicious statement of facts and phenomena, with here and there a suggestive inference or an indication of lines for further observation, wisely refraining from what would have been more or less profitless discussions, the times not yet being ripe for broad generalizations on the subjects of which he treats.