170 Experiments with Guano^ H^'c. 



management. The effect of the nitrate of soda has now 

 become very evident, the plants watered with it are larger 

 and earlier in bloom than the others; it appears however to 

 me probable, that these etiects will be rather evanescent, 

 and the plants will always require this stimnlant. I observe 

 in the English publications, that this constant necessity for 

 the stimulant, is urged against all these new manures, but 

 surely there is no strength in this argument. All manures 

 become exhausted, and the farmer has always to apply the 

 stimulant of his manure-heap, to make his land bear. From 

 some experiments I have made, 1 think that guano will 

 prove a manure of nuich greater permanence than any that 

 is now in use, particularly in soils deficient in phosphate of 

 lime. Yours truly, J. E. T 



Boston^ Aprils 1843. 



The new guano manure is rapidly obtaining a more ex- 

 tended notice, and it is with great pleasure that we are en- 

 abled to offer the above remarks by our correspondent, Mr. 

 Teschemachcr, who has instituted a greater number of ex- 

 periments with it than any other individual in the country. 

 It is now a year or more since he first made use of the 

 guano, and he is more confirmed than ever of its great 

 value to the cultivator of plants, as Avell as to the cultiva- 

 tor of the more staple products of the farm. We may, 

 therefore, refer those who wish to make a trial of the guano, 

 to his remarks above, which will form a guide to their ex- 

 periments, and put them on their guard against a too free 

 use of this powerful fertilizing substance. 



It is but a short time since we commenced some experi- 

 ments with the guano; but so far as we liave used it, its 

 effects have been good. Early in February a hundred or 

 more young roses were potted oft" into No. 2 pots, using the 

 same soil for all, and without any intention of making use 

 of guano. A small quantity, however, was given to us by 

 a friend, and we gave directions to have a trial of it made 

 upon a few roses. Twenty-four plants were selected, as 

 nearly equal in size as possible ; twelve of them were wa- 

 tered with liquid manure, made by putting eight gallons of 

 water to half a peck of poudrette, and the other twelve 

 were watered with liquid guano, made in the proportion of 

 one pound to tioelve gallons water. Only two waterings were 

 given, at the interval of a week each. For fifteen or twenty 

 days no difference was perceived in the twenty-four plants, 



