28 Prof. Ernst Haeckel 



man as an individual (ontogenic), with all his organs, com- 

 pared together step by step. It is the true Book of Gen- 

 esis in the Bible of Nature, and proves how much more 

 strange, wonderful, and interesting truth can be than mira- 

 cle, fiction, tradition, and mythology. It is going through 

 as many editions as the Natural History of Creation, and 

 should be read directly after it, as its counterpart and con- 

 clusion. (Published by D. Appleton & Co.) 



In 1877, before the Association of German Naturalists 

 and Physicians (the leading scientific body of Germany), 

 our knight-errant of evolution was called upon to enter 

 the lists with the celebrated pathologist, Eudolph Virchow, 

 his former instructor, and the leading spirit of the uni- 

 versity and scientific coterie of Berlin. In this duel, as Mr. 

 Gladstone would call it, our knight bore himself right gal- 

 lantly and well, as all may see in his work which resulted 

 from it, which appeared in 1878 as the Liberty in Science 

 and Teaching (published also in English by the Appletons), 

 with a noble and useful introduction by Prof. Huxley. Of 

 this work and its bearing upon philosophic thought more 

 must be said when we touch his philosophy. 



We have noticed enough of his publications from year 

 to year to show what an indomitable man, naturalist, and 

 worker this Ernst Haeckel must be. His past assures us 

 that he will go on learning, teaching, and publishing to the 

 end of his days, and that he will never touch any topic that 

 he will not enlighten and adorn. 



In a letter to an American friend, written by his own 

 hand, he classifies his important works to date as follows : 



I. General Biology and Philosophical Works. 



1. General Morphology, 1866. 



2. Natural History of Creation, 1868, etc. (8 edi- 



tions, 12 translations). 



3. Collected Popular Essays, 1878. (Bonn, 2 vols.) 

 II. General Zoological and Phylogenetic Works. 



1. Gastraea Theory, 1873. 



2. Studies of the Monera and other Protista, 1870. 



3. Anthropogenie, 1877 (3 editions). 

 III. Zoological Monographs. 



1. Radiakria (35 plates), 1862. 



2. Calcarspongiae (60 plates), 1872. 



3. Medusas (72 plates), 1877. 



4. Siphonophoras (64 plates), 1869, 1888. 



