10 EXPERIMENT STATION. [Jan. 



to nnsatisfactorj drainage, which permitted an accnmnlation 

 of salts lliat in the favorable soil were leached ont during the 

 season. 



The refnse tobacco stalks on an acre of tobacco have been 

 fonnd to contain over 87 pounds of nitrogen, 132 ponnds of 

 potash and 20 ponnds of phosphoric acid, worth about $24 when 

 compared with other standard waste vegetable matter like cas- 

 tor ])omace. The common practice of spreading the stalks on 

 the field to be leached bv the rain and snow recovers a little 

 more than half of the nitrogen and i")otash and practically none 

 of the phosphoric acid. The stalks shonld be cnt or shredded 

 and i)lowed under, so that all the fertility may be recovered, 

 while over 1^/4 'to^is of vegetable matter may be incorporated 

 with tlie soil to form hnmns. 



During the year nearly 400 different insects were inquired 

 about by the people at large. The season was especially favor- 

 able for the development of plant-lice, and over a hundred sep- 

 arate inquiries were received regarding these insects. 



The discovery, in a box of celery from California of 50 in- 

 dividuals of a species of lady beetle belonging on the Pacific 

 coast shows how injurious insects also may be imported and 

 added to our list of garden pests. 



Tests of new insecticides did not show them to be in any 

 way superior to established kinds. 



