Bibliographical Notices. 491 



he does so is he nearing the true goal, and freeing himself from the 

 suspicion of wasting his time on elaborate trifles. 



"Eh man! for Guid's sake leave off skinning slugs and be a 

 man ! " quoth a Professor of Greek to a Professor of Natural History ; 

 and though happily the reproach was much misplaced where it was 

 applied, it might we fear be addressed with great justice to many of 

 those who follow natural science in England. 



We gloat over new species and gather together as many slides with 

 " objects " on them as would roof in the Crystal Palace ; we tax our 

 mechanists and opticians to make us instruments whereby we may 

 view these things ; and all the while, the living, moving, feeling works 

 of God, of which these are but shreds and fragments, are neglected, 

 and the grand laws which rule their being, undiscovered. As if a 

 foreigner wishing to become acquainted with the English in the 19th 

 century were to go to Monmouth Street and study the old clothes, 

 shutting his eyes to the men and women who elbow him. 



It i3 as the antithesis of all this that we called Dr. Schulze's a 

 peculiarly German book. The animals which he has investigated are 

 nearly allied to the well-known Planarice, and are found plentifully 

 enough in both fresh and salt water. Now two methods of proceed- 

 ing lay open to him : — either, following the approved Anglican mode 

 (having first set up an elegant cabinet full of drawers, filled with 

 neatly-made glass cells), he might have scoured the country, bored 

 his friends, and caught his death of cold in seeking these worms, 

 singing Io Psean whenever they afforded a sufficient pretence for in- 

 venting a new dog-latin name (which is called discovering " a new 

 species "), and finally have consigned his treasures to the cabinet 

 aforesaid to be eventually " figured and described " in some exquisite 

 and useless work ; — 



Or, as Dr. Schulze has fortunately preferred doing, he might have 

 acquired a thorough knowledge of a few species, entering, with an 

 insight which can only result from wide knowledge, into the details 

 of anatomy, histology, development and chemical composition ; com- 

 paring and, so far as possible, reconciling the discrepant statements 

 of other observers, and therefore possessing a thorough acquaintance 

 with the literature of his subject ; in a word, fulfilling the Horatian rule 

 in art, and making his work "totus, teres, atque rotundus." Such 

 is the German method. If we were to find a fault in this case, it 

 would be with a certain diffuseness and needless repetition. 



We subjoin the chief results at which Dr. Schulze has arrived: — 



1 . The integument of the straight-intestined (Rhabdocoela) Tur- 

 bellaria consists of a soft homogeneous finely granular base, which 

 bears the cilia and contains many clear spaces in its interior. In this 

 it resembles the substance of the body of the Infusoria and Hydras 

 (sarcode of Dujardin, formless contractile substance of Ecker) ; it is 

 distinguished from it however by the fact, that on treating it with cer- 

 tain reagents, especially diluted ammonia, it becomes broken up into 

 regular pieces, each of which consists of an aggregation of vacuolse 

 (Hohlraumen) and the appertaining connecting substance. This 

 breaking up can only be explained on the supposition, that each re- 



