334? Loudon* s Equilibrium of Population, fyc. 



procure a supply of 300 gallons of water per minute for the 

 town. The lecture was illustrated by maps and numerous 

 drawings. {The Northern Whig, March 28. 1836.) 



REVIEWS. 



Art. I. Notices of Works in Natural History. 



The Society for the Diffusion of Useful Knowledge : The Penny 

 Cyclopaedia, in Numbers Id. each. 



An advertisement, dated April 21. 1836, is included in the 

 first number (339.) of the sixth volume, and supplies infor- 

 mation that "the committee feel assured that somewhat more 

 than a fourth of the whole Cyclopaedia is now published; 

 and that " they propose that the work shall be completed in 

 eighteen volumes of the present size; and they pledge them- 

 selves that it shall not exceed twenty volumes:" and, farther, 

 that, " in order to comply with the wishes of the bulk of 

 the subscribers, it is the intention of the committee, upon the 

 completion of the [subjects of the] letter B, to publish at 

 the rate of three volumes annually," in monthly parts, 18c?. 

 each, four to a volume. 



The following subjects in, or associable with, natural his- 

 tory are treated on in the numbers in part 40. : broken wind, 

 JSromelidcetf, Bronchitis, Bronchocele, Broussonet/tf, and 

 Brosimus, in Nos. 329, 330.; 2?ruchus, 332.; Bryaxis, Bubo, 

 334.; bud, 337.; BufFon, Bulimulus, Bulinus or Bulimus, 

 339. 



Loudon, Charles, M.D., late one of the Royal Commissioners 

 for Enquiring into the Employment of Children in Fac- 

 tories : The Equilibrium of Population and Sustenance 

 demonstrated; showing, on Physiological and Statistical 

 Grounds, the Means of obviating the Fears of the late 

 Mr. Malthus and his Followers. 8vo, 13 pages. 1836. Is. 



" It is proposed to show, physiologically, a mode by which, 

 if necessary, a check, both moral and healthful, might be 

 applied to population, founded simply on the laws of nature." 

 This consists in using the capacity for a protracted period of 

 lactation which is given in nature. " But it is not intended 

 to inculcate the adoption of the principle under the actual 

 circumstances of the country ; . . . the resources of mankind 

 for the production of food, in the Western World alone, 

 are such as to meet every possible increase of population, for 

 an indefinite number of ages to come." 



