ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 105 



blances ; for there are depicted branched forms, club-shaped elements, 

 radiating tufts, and confused central networks of filaments. 



Del Rfo's Bacteriology** — Dr. L. Del Eio has obtained the distinc- 

 tion of being the first to bring out in his mother tongue a treatise on 

 Bacteriology, all the previous works on this subject in Spanish being 

 translations of foreign authors. The ' Elements of Microbiology for the 

 use of medical and veterinary students ' will no doubt supply a want 

 hitherto felt by the Spanish-speaking scientist and student, more especi- 

 ally as it contains all the information necessary for acquiring a good 

 practical knowledge of the subject. The first chapter is devoted to the 

 biographies of those distinguished microbiologists, Pasteur and Koch, 

 a feature whicb distinguishes the work from other treatises on Bacterio- 

 logy- 



* Madrid, 1899, 648 pp. and 195 figs.. 



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