I )A 1 1 ; V 1' A I{ M I N G DA I H V I N G AG K( )T KC ' H N V . 571 



the Jiutlior states tLat dried potatoes are nuicli chcaiKT tli.ui o^its and ihmiikI for 

 pound are as valiia!)le as a feed for horses. 



The relation between form and function, with special reference to the 

 horse, S. von N'.VTiiusirs {Fiihiin(/'.s Laiidiv. Ztg., .77 (li)()H), Vo. 12, iip. '//7-'/J.'', 

 fiilK. '/). — The author believ«'s that a correhition exists between form and func- 

 tion, pointing out that a comparison of the forms of the greyhound and the 

 (liornughlirt'd horse. Itotli of which have i>een l)red to run at a liigli rate of 

 sjieed for sliort distances only, shows a close resemblance, whereas the foxhound 

 and the hunter, which must maintain a good speed for long distances have a 

 form quite different. A large number of measurements on horses of different 

 breeds are presented in support of the views of the author, who maintains that 

 animals must be bred for a single purpose and that to obtain a certain func- 

 tion the iM'eeder must consider the form in choosing the hrei^ding stock. 



The influence of eggshell on metabolism during incubation, F. Tangl and 

 G. Hammkrschlao {Arih. I'lii/siol. \I'/iii<jrr\. Ul {I'JOH). Ao, 8-10, pi). -'i23~ 

 JiSH). — Experiments with hens' eggs showed that both the shell and membrane 

 lining it play a part in the development of the chick. During incubation organic 

 and inorganic material disappear from the shell, the former in larger pro- 

 portion. Of the total material thus removed more than half is organic material 

 when expressed on a water-free basis. The greater part of the inorganic 

 material thus removed consists of calcium. 



According to the authors" figures, the shell of an egg weighing GO gm. loses 

 during incubation 0.4 gni. dry matter, of which 0.15 gm. is calcium and 0.2 

 gm. organic material. 



The experimental data furnish an explanation of the well-known fact that 

 eggshells become more fragile during incubation. 



Breeds of poultry described and illustrated, O. Tbieloff {Das GroasgcflUgd 

 in Wort mid liihl. Magflchiof/, [1908], pp. 80, figs. 37).— This work treats of 

 the peacock, turkey, pheasant, goose, duck, bantam, guinea, and common fowl. 

 Many and little known breeds are included. 



Preservation of eggs, F. Prall (Zfsclir. Untcrsuch. Nahr. u. Gniiissintl., J) 

 (lUOl), So. 7. pp. 'i'i-',-',8l ; ahs. in Znitbl. Agr. Chctn., 37 (1908), No. 7, pp. 

 ^86-^89; II yg. Viande ct Lnit, 2 (1908). No. 8, pp. 362-367. ) —Eggs kept in 

 closefl glass vessels embedded in sand spoiled in 6 weeks, thereby indicating the 

 necessity of ventilation. Kept in cool cellars with good A'entilation they re- 

 mained fresh as long as when packed in sand, straw, or other material. Eggs 

 coate<l with jKirathn or with hydrofluosilicic acid soon spoiled. Better results 

 were ol»tained by coating with siiellac. I'reservjit inn by coating with per- 

 manganate of potash or a sohition of water glass or Ilanika's method of dipi»ing 

 hi hot water and alcohol gave good results. A 10 per cent solution of water 

 glass is considered the best li(iuid preservative, although glycerin, limewater, 

 and a .3 r»er cent solution of water glass are good. In practice, dry preservation 

 In cold storage near the freezing point with an atmosphere of SO i)er cent 

 Lumidlty is especially reconuuended. 



DAIRY FARMING— DAIRYING— AGROTECHNY. 



Cropping systems for New England dairy farms, L. G. Dodge ( U. 8. Dcpt. 

 Agr., I'armcrs' Kill. .^.{7, pp. .i'l, figx. .^ ).— Ty|iical farms. re|)resenting the best 

 methods in the dilTerent sections of New Engl.ind. .ire describi^l to show what 

 may be accomidishod to increase the amount of milk and butter that can be 

 I»rodiiced iwr acre. A short rotation, which will include clover and corn silage. 

 Is recommended. 



70454— No. <;— 09 15 



