115 



accurate^ account of all time aud labor applied to the crop and a record 

 of tl)t' (puintity of beets raised we can approximate very closely next 

 year to cost, yield, and protit, when beets are cultivated on a large 

 scale as a matter of business." 



A map of Nebraska is given showing the distribution of the beet-cult- 

 ure experiments in that State. The bulletin also contains the text of 

 an act of the State legislature approved March 19, 1889, for the en- 

 couragement of the manufacture of sugar, and of a bill lately introduced 

 into Congress for the i)romotiou of the sugar-beet iiuUistry. The for- 

 mer provides for a bounty of 1 cent per pound on sugar " from beets, 

 sorghum, or other sugar-yielding canes or plants, grown in Nebraska, 

 which contains at least 10 per cent of crystallized sugar." 



In an appendix to the bulletin the cooperation of all persons in the 

 State who are interested in the sugar-beet industry is solicited. The 

 station will distribute seed to a liuiited extent, and analyze beets sent 

 with definite answers to its circular of inquiry. 



Nebraska Station, Bulletin No. 14, June 7, 1890 (pp. 149). 



Insects injurious to young trees on tree claims, L. Bruner, 

 (illustrated). — This is a report 07i " some of the most injurious insect 

 enemies of young trees, such as are grown on tree claims, homesteads, 

 and farms, for wind breaks and fuel, in Nebraska." Such insects as 

 destroy the foliage rather than the wood and roots of trees are described 

 in the main portion of the bulletin aud a few species of ^'defoliators" 

 in an api)endix. 



" Considerable space has been devoted to each of the species treated, 

 ■while the text is made clearer by the addition of many explanatory 

 illustrations of both the injurious species, and their insect enemies that 

 assist us in keeping them in check. In addition to a general introduc- 

 tory chapter on the causes for the increase aud spread of these injurious 

 insects, together with modes of prevention, remedies have been sug- 

 gested in each case after the life history of oneof them has been given." 

 The appendix also contains a short article on insecticides and how to 

 apply them. The author expressly disclaims originality for his descrip- 

 tions and most of his illustrations, and states that the bulletin is a com- 

 pilation from many sources, i)roper credit being given to each auihority 

 in the body of the work. There are, however, many incidental refer- 

 ences to observations by the author. The list of insects described in- 

 cludes the Cecropia silk- worm {Platysamia cccropia, Linn.), with its 

 enemies, Ophion macrurum, Gryptns mmcius, Chalcis maricv, aiul a 

 Tachina Hy ; Polyphemus silk- worm {Telea iJolyphemus)-, apple-tree 

 tent-caterpillar {(JUHWcanrpa americana, Harr.), with its enemies, Pini- 

 pla annulipeH, Pimply coiKjuisitor, Calosoma caliduni, G. scrutator, Po- 

 disus spiuosi(s,i\U(\ PcriUus clmidus; forest-tree tent-caterpillar (C?mo- 

 campa sylnatica, Harr.), with its enemy, Pimpla pedalis; fall web-worm 



