^oz THE POPULAR SCIENCE MONTHLY. 



thoroughly studying- them, instead of sitting in her study patching 

 dogmas out of scriptural shreds. She should learn from science the 

 method of studying facts, as well as its importance, how to criticise, to 

 sift, to throw away the chaff and keep only the solid grain. And, hav- 

 ing mastered the secret of modern knowledge, she should proceed to 

 put theology upon a solid inductive basis, and build it up into the 

 genuine science of which it is capable. 



And similarly science ought to obtain the help of religion to 

 elevate and perfect it. From the ideal aspirations of faith science 

 should enlighten its vision and ennoble its aims. It should not re- 

 strict its studies merely to the lower realm of facts. Science fails to 

 fulfill its appointed mission in the world if it ceases its researches on 

 the threshold of the grandest discoveries open to it, the questions 

 above all in interest to humanity. It should learn from theology to 

 study the laws of mind and soul as well as those of matter ; to recog- 

 nize that the fundamental truths of morality and religion are self-evi- 

 dent, as well as those of geometry, and that the belief in a God and 

 in a future state is as primitive, universal,, and necessary, as the belief 

 in the uniformity of Nature or the indestructibility of force. It 

 should look at the upraised finger of Faith and be pointed from the 

 law to the Law-giver ; from the effect to a cause ; from the force to 

 the living well. 



To widen, purify, and make stable; to save from the building of 

 unsubstantial air-castles, and from blind clasping of objects unworthy 

 of worship this is what science should do for religion. 



To inspire and enable and crown; to turn from peering and pick- 

 ing altogether in the dust ; to look up to the heavens this is what re- 

 ligion should do for science. Playing no hostile nor rival, nor even in- 

 dependent strains but each in sweet concord and divine respondence, 

 joining in the same holy anthem thus knowledge and reverence, 

 raind and soul, all " according well, may make one music as before, 

 but vaster." 



-4^*- 



NATURE OF THE INVERTEBRATE BRAIN". 



Br Prof. H. CHARLTON BASTIAN. 



I. 

 "^TOTHING distinctly answering to a brain is to be found in the 

 -L-N lowest animals in which a nervous system exists. It is thus, for 

 instance, with star-tishes and the larger nematoid entozoa, in which 

 what most nearly resembles a brain consists of a mere band of nerve- 

 fihres surrounding the commencement of the oesophagus, and containing 

 a few nerve-cells, partly between its fibres and partly in groups slightly 

 removed therefrom. 



