[ 22 ] 



Letter from Robert Frazer^ Esq, of West- Chester, con- 

 taining an account of the use of Plaister of Paris ^ by 

 CoL John Hannum, of Chester county. 



Sir, 



I have received no information from those into whose 

 hands I put your queries in answer thereto, except 

 from Col. John Hannum, to whom 1 deUvered a copy 

 a few days ago. Your anxiety to receive information on 

 the subject, urges me to the most speedy transmission of 

 such as 1 have obtained. Whether it will prove satisfac- 

 tory or not, you will be best able to judge. 



Que7'y 1. How long have you used plaister ? 



Answer. Twelve years. 



Query 2. What state or condition was your land in 

 when you began the use of it ? 



Answer, 1 have used it on virgin soils, and upon old 

 land ; sometimes very poor ; sometimes good strong 

 land ; sometmies indifferent. 



Q^uery 3. What quantity per acre have you general- 

 ly used. 



Answer, From one to five bushels. 



Query 4. What soils are most proper for this manure? 



Answer, High ground and sandy soils. 



Query 5. Have you repeated the application of it with 

 or without ploughing? at what intervals, and with 

 what effect? 



Ansvoer, Frequently both, with and without plough- 

 ing, and generally with very great effect. 



Query 6. In consequence do you find that it renders 

 the earth sterile after its useful effects are gone ? 



