228 



nil \i.in nil v i;ii,i rn\ 



Tin' sampling tubes are made of iron and the cutting edges of t fin - 

 pered steel. The method of the use of these tubes, as suggested above, 

 is similar to thai of the use of the soil sampling tubes now in common 

 use in many citrus orchards. It seems likelj thai improvements can 

 be made in the struoture and arrangement of these tubes as the result 

 of further experience in their use. For example, it seems possible 

 thai the sampling tubes can be constructed so thai after the samples 

 have been eu1 the tubes can be opened so thai the samples are fully 

 exposed and easily removed from the tubes. In this evenl the tubes 



i'u: 57. Sampling tube tor baled alfalfa hay. bean 

 iti iw or other similar ui.ii.mi.os. Bhowlng method of 

 taking samples 



would he divided into equal longitudinal halves, arranged so that 



they can be opened readily, and hinged so that the two halves can he 



easily bandied and kept in position when opened, Or it is possible that 

 the shape and si.e of the tube or the cutting edge may he modified so 



that the samples ean he more easily removed than is the ease at present. 



This description of manure and other sampling tubes is presented 



here in the hope of arousing greater interest in the study of a standard 

 for the water content "( organic materials as a hasis for the fair valua- 

 tion id' manure or other materials to he used in orchard mulching or 



other orchard practices. 



