214 EXPERIMENT STATION RECORO. [VoL 87 



has bad any exact experimental basis. Nor does it seem to have been appre- 

 ciated that different species may have great differences in the oxygen require- 

 ment of their roots and widely variant responses to differences in soil aeration, 

 responses which appear to be quite as specific and significant as the responses 

 to temperature and to available water which form the present basis of ecological 

 classification." 



Reclaiming the waste, P. A. Graham (London: Country Life, Ltd.; New 

 York: Charles Scribner's Sons, 1916, pp. XIII+llS; rev. in Country Life [Lon- 

 don], 41 (1917), No. 1050, pp. 149, i50).— This book is a number of the so-called 

 " Increased Productivity Series." Its object is " to direct attention to the vast 

 possibilities of waste land reclamation In Great Britain and Ireland." It con- 

 tains the following chapters : 



The urgency of land reclamation; reclaiming a Norfolk heath (March 9, 

 1916) ; reclaiming a Norfolk heath — four months' progress (July 12, 1916) ; 

 the weeds of a Norfolk heath, by Brenchley ; how to hold reclaimed waste ; 

 nowt but bracken and fuzz ; how much reclaimable waste is there ; sand dunes 

 and coast erosion ; poverty bottom — a lesson from downland ; reclamation of 

 waste land in Holland ; reclamation In Holland — a colonial minister's expe- 

 rience ; making farms out of moorland ; fish ponds and reclamation ; reclamation 

 in Belgium, by H. Vendelmans ; a war of timber ; afforestation of peat bogs and 

 sand dunes, by A. Henry; planting on the South Downs, by Somerville; reclaim- 

 ing the pit bank ; labor and reclamation ; forestry and reclamation ; and the 

 Industrialization of land in France, by Souchon. 



The apparent main purpo.se of this book is to outline ways and means of 

 meeting war-time conditions in England. 



Summaries of soil fertility investigations, A. T. Wiancko and S. C. Jones 

 (Indiana Sta. Bui. 198 (1917), pp. 5-20).— This bulletin presents in a condensed 

 form the principal results obtained up to the present time from the use of lime, 

 legumes, manure, and various commercial fertilizers upon seven outlying experi- 

 ment fields and upon one of the older series of plats on the univer.^slty farm. 



Excluding two fields which have been under treatment only one year, the 

 following results have been secured from the principal treatments : With ground 

 limestone the profits have ranged frx>m $3.31 to $18.34 per acre per rotation, 

 and with manure from $1.62 to $4.45 per ton per rotation. On limed land mixed 

 fertilizers have been used at a profit in all cases. At North Vernon (Jennings 

 Co.) and Worthington (Greene Co.), where fertilizers were applied to wheat on 

 manured land, good wheat increases were secured with a 2(X>-lb. application 

 of a fertilizer carrying 2 per cent nitrogen, 8 per cent phosphoric acid, and 4 

 per cent potash following corn, which had received 6 tons of manure and 200 

 lbs. of add phosphate per acre. 



Rock phosphate without manure has yielded profitable returns at Scottsburg 

 (Scott Co.) and Wanatah (Laporte Co.). With manure it has been profitable 

 at North Vernon and Worthington, while at Scottsburg and South Bend (St. 

 Joseph Co.) It has been used at a loss. Acid phosphate, with or without manure, 

 has shown large profits In all cases, and per dollar invested has been the most 

 profitable fertilizer treatment either alone, with lime, or with both lime and 

 manure. 



Clover in place of timothy In rotation with corn and wheat has lncrea.sod the 

 value of the rotation by $8.07 at North Vernon and $7.80 at Worthinfrton. where 

 no fertilizer was used. On fertilized land the legume has increa.setl the value 

 of the rotation by $12.50 and $5.08, respectively, after paying for the fertilizer. 



Why Illinois produces only half a crop, C. G. Hopkins (Illinois Sta. Circ. 

 193 (1917), pp. 3-16).— In this address before the Illinois State Fanners' In- 

 stitute, at Streator, February 21, 1917, the author analyzes the Illinois crop 



