RURAL ECONOMICS. 887 



arc ;ils<) i^ivoii ropu'dinj: the lncjition, si/.c, nud tilliii.i; of silos, and notes on 

 com binders, racks, and cntlers. 



Greenhouse and conservatory construction and heating, P. X. Hasluck 

 ( .Ync Yurk mid London, ]!)in\ iip. IHO. fitjs. 238). — This is stated to be a com- 

 lireliensive digest of information contributed to the BuUdiiuj World (London) 

 on methods and details of construction of various jireenhouses and conserva- 

 tories. Tlie subjects treated are i)rinciples of jireenhouse construction, horticul- 

 tural glass and glazing, leau-to greenhouses and conservatories, span-roof green- 

 houses, dome-roof conservatories, conservatory and veranda, window conserva- 

 tories, and heating greenhouses. The text is fully illustrated. 



Ventilation for dwellings, rural schools, and stables, 1<\ H. Kinc. {Madison. 

 Wis.. 1908. pi>. VI + 128). — In the introductory chapter of this brief treatise, 

 which is intended especially for parents, teachers, and school officers and the 

 owners and caretakers of live stock, the author discusses the requirements of 

 man and of animals and gives specific examples of the evil effects of insuffi- 

 cient ventilation. There are also discussed the amount of air required, chemical 

 changes and loss of sustaining power in respired air, and the influence and 

 removal of moisture, and simple experiments bearing on these points are 

 suggested. 



The second chapter, treating of the principles of ventilation, takes up air 

 movement, the motive power used, and the influence of the wind in this respect. 

 Experiments illustrating air movement are suggested, and the relation of air 

 movement to ventilator construction is discussed. 



In chapter 3. on ventilating practice, are given designs of systems for dwell- 

 ings, rural schoolhouses and churches, stables and poultry houses, showing the 

 application of the principles involved. 



RURAL ECONOMICS. 



Better agriculture and how to get it. J. Hamilton {Harrisburg. Pa., 1908, 

 pp. n). — This is an address given before the meeting of the Pennsylvania State 

 Board of Agriculture at Harrisburg, January 22 and 23. 1908. It presents a 

 comparison of yields of staple agricultural products in this country and abroad 

 and shows that the greater yields in foreign countries are due in part to the 

 better facilities afforded for itinerant instruction in agriculture. 



The latent forces of country life (.four. 8oc. Agr. Brabant rt Ilainaiit, 

 53 {1908), No. 52, pp. 1 1'/l-l l-'i9) . — This ;irticle is sununarized from a recent 

 work by Tibbaut dealing with the in'oblcni of (he improvement of rural con- 

 ditions in lielgiuni. 



The natural heaUhfulness of the country, it is believed, is not a sufficient 

 inducement to keep farm laborers on the land, and the improvement of the 

 economic and social conditions of country life to counteract the so-called 

 attractions of town life is reconnnended. Among the needs of the rural jwpula- 

 tion at the present time, the lack of credit is believed to be the greatest. If 

 easier facilities for securing credit could be arranged, together with the 

 affording of oi)portunity to the laborer of becoming a small holder, it is thought 

 the rural jjopulation would greatly increase in numbers and vigor of life. 



Farmers' cooperative demonstration work in its relation to rural improve- 

 ment, S. A. Knapp {U. S. Dcpt. Apr., Bur. riant Indus. Circ. 21, pp. 20).—T\w 

 author discusses the necessity for imitroved rural conditions in the South and 

 I 'resents the remedy offered by the farmers' cooperative demonstration work 

 conducted under the direction of the Bureau of Plant Industry of this Depart- 

 ment, with some of the results thus far accomplished. 



79218— No. U— OU 7 



