45 



Determhuif'ton nf sail inoidare. 



IN SOILS FKEE FKOM STONE. 



To take samples: 



i. Provide yourself with soil tulje, mallet, and three soil trays. 



2. Having determined place for taking soil sample, pack the surface of the sell 

 lightly with the foot. Press or drive the tube into the ground until the 1-foot mark 

 on the tube is even with the surface of the ground. Give the tube- a turn. Place 

 one hand firmly over the top of the soil tube to keep out air and with the other hand 

 grasp and slowly withdraw the tube. 



3. Remove cover from one of the trays, invert the soil tube, and allow the core to 

 pass from the tube into the tray. Put cover on tray at once. 



4. Return soil tube to the hole and press or drive down until the 2-foot mark on 

 the tul)e is even with the surface of the ground. Remove as before and place the 

 core in a second tray. 



5. In like manner secure core from third foot and introduce into a third tray. 



6. Pass to another point and as before secure cores of the first, second, and third 

 foot, respectively, and introduce the cores into the trays containing the first, second, 

 and third foot, respectively, already obtained. 



7. Repeat until composite samples of four are obtained. 

 To dry samples: 



8. Weigh each tray with contents, recording weights of each. Remove covers and 

 place trays in drying oven. 



9. After forty-eight hours replace covers and weigh trays with contents, carefully 

 recording weights. Be sure samples are dry. 



10. Remove the dry soil from trays, wipe the trays carefully and weigh, recording 

 weight. 



11. Determine («) loss of moisture from the soil, {!>) weight of dry soil, and (c) 

 the per cent of moisture in each soil estimated on dry weight .of soil. 



IN KOCKY SOIL. 



To take samples: 



1. Provide yourself with two soil trays and a spade. 



2. Having determined place to take samples dig a hole 1 foot deep and a little 

 wider and longer than the width of ycjur spade. See that one side is perpendicular. 

 Remove all loose soil from bottom of hole. 



3. With spade cut off a slice 1 inch thick from the perpendicular side of the hole 

 to a depth of 6 inches, allowing soil to fall to the bottom of the hole where it should 

 be quickly crumbled and mixed and freed from stones larger than a small marble. 



4. Place about one-half pint of this soil in one of the trays and cover. Remove the 

 rest of the soil from the bottom of the hole. 



5. With spade finish cutting the slice to the depth of 1 foot and proceed as above 

 to mix and free from stone. 



6. Place one-half pint of this soil in the second tray and cover. 



7. Selecting another point proceed as al)Ove to take samples of the first and second 

 6 inches, respectively, and place the samples so taken in the trays with the samples 

 of the first and second 6 inches already taken, respectively. 



To dry the samples: 



8. Weigh each tray with contents, recording weights of each. Remove covers and 

 place tray in drying oven. 



9. After forty-eight hours replace covers and weigh trays with contents, carefully 

 recording weights. Be sure samples are dry. 



10. Remove the dry soil from trays, wipe the trays carefully and weigh, recording 

 weight. 



11. Determine (a) loss of moisture from soil, {b) weight of dry soil, and (c) the 

 per cent of moisture in each soil estimated on dry weight of soil. 



