ANTMAL PRODTTCTTON. 73 



In .i,'('ii('r,il lilt" li.mircs .i,'iv('ii inilic.itc Hint laiik.i^c (■■iii lie used to i^ood iidviuitnj^e 

 in tilt' rntidii for the fnttciiiiii; lio;^ ;is well ;is l"(ir tlic .t^rowiiii; jii.i;." 



Motion and muscular work in relation to digestion in horses, A. Sciieu- 

 NERT (Ltniilir. ./(ilirh.. A'l (IHO'i). A o. .■;. jip. SU5-827). — I'nictical doductioiis are 

 drawn froni cxiKTiiiicnls iiiTviously rciKirtcMl (E. S. R., 17, ]i. ."is.j). If work is 

 rcasonahlc in anMuinl and nut ((jiiI iiincd until .i^rcat fati.^inc is induced it does 

 not exercise an\- unra\ uraiile eriect u|mhi the dii^estion in li<)i-s(»s, Imt, on the 

 (itlier hand, ni.-iy exercise a CaNoi-ahle effect, Aniin.als wiiicli have worked he- 

 fore llie,\- are U'i\ and .are allowed lo I'est after eatin;^ digest their food in the 

 same wa\- as horses al rest. 



The Ranidae: How to breed, feed, and raise the edible frog (Allcinlalc, 

 \. ./.: Mcadoir liniak I'diiii. llli:.'>. iij>. .11. p;/s. H). — The author helieves that 

 fros; raisinj; for niai-ket may he made a profitahle industry and some directions 

 are f^iven wliieli, it is i lainu'd. are has(>d on experience. The life history of the 

 froj; is descrihed. 



The author states tliat the common l^ro^'s of .Vnierica are I'dmi rsruhnhi and 

 J\'. Iciiijiniiiriii and recommends Hie former as the species which should be raised 

 for market. In his statements he has ap|iarently confused the English and 

 American species as it is h'. vntcxhUuid. a lart^e frog, which is commonly eaten 

 in the T'nited States, whei'eas the small lOnudish frog (A*. csci(Jciita) is not indig- 

 enous here. 



Studies in oyster propagation, .1. Nelson (Xcir .Jcrsci/ St<is. Rpf. lOdo, pp. 

 .'i(iii--'i,2t, /</.s'. /'/). — Cloth and felt covered boxes were devised in which fertilized 

 oyster spawn was placed together with suitable material to which the young 

 oysters could attach themselves. These boxes were placed in a number of 

 localities to study the conditions inider which oyster spat forms, the experiment 

 as a whole being a continuation of earlier work on oyster propagation (E. S. R., 

 IT. ]), .".!).■>), The results obtained were for the most part negative. 



" It seems evident that spawn artificially j)repared lacks something to enable 

 it to grow into sjial. or possibly there was an element lacking in the boxes. 

 These points must be investigated next season." 



In general, the boxes were regarded as satisfactory. The water inside seemed 

 to he ])ure and as rich in oyster food as that outside. The tixatioii of oyster 

 sp:it and the genesis of oyster spawn are illustrated by a number of plates. 



First lessons in poultry keeping, J. H. Robinson {Boston: Farm Poultry 

 I'lih. Co.. lUii.'i. pp. liis. fif/.s. 61). — In a series of lessons designed for houn; in- 

 struction, breeding, feeding, care of poultry, the use and managen)ent of incu- 

 hiitors, the construction and furnishing of poultry liouses, and related questions 

 are taken u]). 



Poultry work for 1905, .1, II, Sheppekd (North Dakota Kla. h'pt. WO.',, pp. 

 .'id-'/S). — A brief sunnnary of data on the eggs laid. set. ;ind hatched: the 

 poultry used and sold: and the linanees of the station poultry department. 



The American standard of perfection {Aincr. Poult ri/ Af<.soc., 1900, pp. 299, 

 I'kjk. 12-'i). — As stated in the subtitle, this volume contains a description of all 

 varieties of fowls, including domestic i)Oultry. ducks, turkeys, and geese, recog- 

 nized by the American Poultry Association and is designed as a manual for 

 judging i)oultry. This edition was prei)ared at the twenty-eighth annual meet- 

 ing of the .Vmerican I'oultry Association at Rochester. The material published 

 in. earlier editions has been revised and new breeds and varieties have been 

 added. " hut the policy has been, .and is. to admit only such as have become well 

 established and that clearly are entitled to the distinctive term 'standard- 

 bred.' " The volume also contains a glossary of technical terms and the consti- 

 tution and by-laws of the American Poultry Association, 



