If this experiment be accurate--what becomes of the theoretic visions of those who have written about Strengthening Jellies, Nourishing Broths, &c.? [16] "The excesses of our Youth, are drafts upon our old Age, payable with interest, about twenty years after date."--COLTON'S _Lacon_. 5th Edition, 1820. p. 51. [17] The Teeth are renewed at the 7th year. Puberty arrives at twice seven 14. Full stature at three times seven 21. The vigour of growth at four times seven 28. The greatest vigour of Body and Mind at five times seven 35. The commencement of decay at six times seven 42. General Decay, and decrease of energy, at seven times seven 49. Old Age at eight times seven 56. And the grand climacteric of the Ancients at nine times seven 63. Dr. JAMESON _on the Changes of the Human Body_, p. 31. [18] "Cornaro found that as the powers of his stomach declined with the powers of Life in general, that it was necessary that he should diminish the quantity of his food; and by so doing, he retained to the last the feelings of Health."--ABERNETHY'S _Surg. Obs._ p. 71. [19] And for Culinary Operators from 25 to 40. Before the former, they can hardly accumulate sufficient experience; and after the latter, they every day lose a portion of their "_bon goût_" and activity. [20] See his sensible Essay on the Changes of the Human Body at different Ages. 8vo. 1811.--p. 89. [21] "The Pulse in the new-born Infant, while placidly sleeping, is about 140 in a minute. Towards the end of the first Year 124 Towards the end of the second Year 110 Towards the end of the third and fourth Years 96 When the first Teeth drop out 86 At Puberty 80 At Manhood 75 At Sixty, about 60" BLUMENBACH'S _Physiology_, p. 40. The expectations of Life are thus calculated by De Moivre--Subtract the age of the person from 86, half the remainder will be the expectation of that Life. [22] See the history of a case of Spectacles, &c. in page 61 of Dr. KITCHINER'S _Practical Observations on Telescopes, Opera Glasses, &c._--Third Edition. [23] "In proportion as the powers of the Stomach are weak, so ought we to diminish the quantity of our food, and take care that it be as nutritive, and as easy of digestion as possible."--ABERNETHY'S _Surgical Observations_, p. 67. [24] "Nothing is a greater Enemy to feeble life, than laying aside old habits--or leaving a climate, or place, to which one has been long accustomed: the irritation occasioned by such changes is highly prejudicial.