PROBLEMS OF MODERN SCIENCE 



of the crowded Strand. Lattice-work plays an 

 important role in the construction of the cranes 

 themselves, and renders them such beautiful and 

 attractive objects as compared with the cumber- 

 some solid cranes in use but a few years ago. The 

 lattice-work masts distinguishing the warships 

 of the United States of America are further 

 examples of the usefulness and efficiency of the 

 device. 



The lattice-work arrangements found in the 

 lower end of the thigh-bone and in the heel-bone 

 are comparatively simple and easily interpreted, 

 but in other parts of the skeleton the arrangements 

 of the lattice-work are far more complicated, their 

 functional meanings are far from clear, and at 

 present seem almost to defy analysis. The subject 

 is receiving considerable attention at the present 

 time, and there has lately appeared a most porten- 

 tous tome in which new views are promulgated 

 and the matter is discussed at considerable length. 

 A perusal of this work will convince the reader 

 how far we are from the right understanding of 

 the mechanics of bone architecture. Invaluable 

 information regarding the most effective arrange- 

 ment of material for withstanding strain and stress 

 might be gleaned by the architect and the engi- 

 neer, should they turn their attention to a study 

 of the human skeleton. 



The building of a bone is one of the most 

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