334 M. Quetelet's Inquiries respect'mg tlie 



Fig. 12. Diagram to shew the relative situation of the mandibles 

 a. a., — the form and arrangement of the oesophagieal 

 appendices 6. b., — and of the intestinal canal c. 



13. One of tlie caudal segments, with two pairs of branchial 



scales. 



14. A branchial scale of the external set. 



15. A branchial scale of the internal set. 



16. Vesicular bodies — functions unknown. 



17. Dorsal aspect of foetus. 



18. Lateral aspect of foetus. 



19. Representation of a pile taken up at Trinity Chain-pier 



five years after it was first placed there. The dotted 

 lines aound the figure indicate the original size of the 

 pile. 



INQUIRIES RESPECTING THE WEIGHT OF MAN, AT DIFFERENT 

 AGES. By M, QVETELET^, 



The Statistical Researches of M. Quetelet are well known to 

 the public. They possess the rare merit of at once being very 

 exact and well arranged, even in the most minute details, and in 

 investigating certain very important scientific and philosophic 

 questions. Accordingly, in estimating, with more precision 

 than had been done, the weight and the average stature of the 

 male and female, at diflPerent ages (or different periods of life) 

 and among different nations, M. Quetelet, as well as M. Vil- 

 lerme and other savans, have not been desirous to satisfy a vain 

 and trifling curiosity ; they have deduced principles relating to 

 the health of man in different circumstances, to Hygiene, to 

 the laws of conscriptidn, and even to the fine arts. Under the 

 last relation, which appears a little foreign, this is the manner 

 in which M. Quetelet expresses himself in the preamble of the 

 work of which we speak. 



" In order to produce a work which may be truly capable of 

 touching us, and of affecting our passions, we must know man, 

 and above all, the man whom we would represent. To take a 

 single example, the artist, who has studied only the type of the 



• A Pamphlet in 4to, of 43 pages. Brussels 1833 Translated by the 



Rev. William Ettershank. 



