126 



THE POPULAR SCIENCE MONTHLY, 



Extracts from Chorda l's Letters, Xew 

 York : " American Machinist " Publish- 

 ing Co. Tp. y20. rrice, $1.50. 



This is a collection of letters contributed 

 during the past two years to the " American 

 Machinist," and published under the above 

 title. They treat of all sorts of topics con- 

 nected with the >York and management of a 

 machine-shop in a bright, attractive style, 

 and are very interesting reading to others 

 than machinists. To the young mechanic 

 the book is of especial value for its constant 

 insistence upon the necessity of good work 

 if a man would rise, and its scorn of the 

 careless and shiftless workman. The author 

 does not stop to moralize, but this thesis is 

 presented at every turn in the many exam- 

 ples and illustrations of shop-work given, 

 and in a way to enable the dullest reader to 

 see its bearing. 



Tide-Tables for the Atlantic Coast of 

 THE United States for the Year 1881. 

 The same for the Pacific Coast. "Wash- 

 ington: Government Printing-Office. Pp. 

 129 and 65. Price, 25 cents each. 



The tables give for every day of the 

 year the approximate predicted times and 

 heights of the tides at the principal ports 

 on either coast, including fifteen ports on 

 the Atlantic and four ports on the Pacific 

 coast. For intermediate ports, tables of tidal 

 constants are appended, from which the 

 times and heights of the tides may be com- 

 puted for those places by applying the cor- 

 rections which are designated to the figures 

 assigned to the principal ports with which 

 they are grouped. 



Report on the Marine Isopoda of New 

 England and Adjacent Waters. By 

 Oscar Harger. (From the Report of 

 the United States Commissioner of Fish 

 and Fisheries, IS'ZS.) Paper, pp. 168. 



The report includes descriptions of the 

 species of hopoda which are at present known 

 to inhabit the coast of New England and 

 the adjacent regions, as far as New Jersey 

 on the south and Nova Scotia on the north. 

 Besides the special labors of the Fish Com- 

 mission, the collections of Professors Ver- 

 rill and Smith, of Yale College, and others, 

 have been used as aids in the study. The 

 descriptions are full, and nearly all the spe- 

 cies are figured in more or less of detail. 



The family, named from all the legs being 

 thoracic and generally similar, is represent- 

 ed on land by the common " sow-bugs," 

 " hill-bugs," and wood-lice. 



A Syllabus of Anglo-Saxon Literature. 

 By J. M. Hart. Adapted from Bern- 

 hard Ten Brink's " Geschichte der eng- 

 lischen Litteratur." Cincinnati : Robert 

 Clarke & Co. 1881. Pp. 69. 



This work furnishes a history and analy- 

 sis of Anglo-Saxon literature in its whole 

 field and in the view of its various relations, 

 wuth commentaries calling attention to its 

 leading characteristics, and pointing out the 

 peculiarities of particular authors and works. 



Second Biennial Report of the Superin- 

 tendent OF Public Instruction of the 

 State of Colorado. Denver: Tribune 

 Publishing Company. 1879-1880. Pp. 

 134. 



This pamphlet contains, in addition to 

 the Superintendent's review of his work for 

 two years, a synopsis of the public-school 

 system of Colorado, the reports of the coun- 

 ty superintendents and of the University of 

 Colorado, and the addresses delivered at the 

 annual meeting of the State Teachers' As- 

 sociation. Of 35,566 children of school-age 

 in the State, 22,119 were enrolled in the 

 schools, and the average attendance was 

 12,618. The expenditure ^:>cr capita of 

 school population was $11.07, and the ex- 

 penditure per capita of average attendance 

 was S31.38. The university was attended 

 by 121 students. The addresses before the 

 Teachers' Association include one on " In- 

 fluence," by the President ; a criticism of 

 classical education, by Mr. David Boyd ; and 

 a plea for the higher education of women, 

 by Mr. F. E. Smith. 



Papilio: Devoted to Lepidoptera exclu- 

 sively. Organ of the New York Ento- 

 mological Club. New York : Henry 

 Edwards, 185 East 116th Street. Janu- 

 ary, February, and March numbers. Pp. 

 12, each. Price, $2.00 for ten numbers. 



This magazine is published monthly, ex- 

 cept in the two *' summer vacation " months. 

 In connection with its special subject it will 

 embrace within the scope of its articles 

 notes on the transformations and diseases 

 of the Lepidoptera^ their use and detriment 



