430 Essay on Guano. 



Art. II. Essay on Guano; describing its properties ; and 

 the best inethods of its application in Agricidture and Hor- 

 ticulture ; iiiith the value oj importations from, different lo- 

 calities ; founded o?i actual analysis, and on personal ex- 

 periments uj)on numerous kinds of trees, vegetables, flowers, 

 and insects in this climate. By J. E. Teschemacher. Pam- 

 phlet, 8vo. pp. 51. Boston, 1845. 



The appearance of this Essay is most timely : for the want 

 of proper information on the application of guano, many ex- 

 periments have failed to give favorable results, and already 

 we hear the further use of this most valuable fertilizer de- 

 nounced. Pamphlets by English writers have been repub- 

 lished, and compilations by some American authors have ap- 

 peared, but though they have contained useful information to 

 those who make their experiments with due judgment, yet 

 none of them have given the results of personal experience in 

 our own climate, yearly repeated, such as Mr. Teschemacher 

 lays before us. For this reason, we hail the publication of his 

 Essay as affording the information necessary to a judicious 

 trial of guano, convinced, from the experience of two seasons, 

 that its introduction to our country must be hailed of the 

 highest utility in advancing the interests of agriculture and 

 horticulture. 



Our pages have already been enriched with numerous ex- 

 periments on plants by our correspondent, Mr. Teschemacher, 

 and those who have read his articles will at once appreciate 

 the value of his Essay — to such it is not necessary that we 

 recommend a careful perusal of it. To those, however, who 

 have not given particular attention to the subject, we advise 

 the study of this pamphlet. 



The title of the Essay is fully explanatory of the subjects 

 discussed; about twenty pages are devoted to analyses, and 

 a comparison of the various kinds of guano, and the re- 

 mainder to actual experiments in cultivation. The first of 

 these is with Indian corn, the substance of which we have 

 already given. (Vol. X. p. 232.) 



Fruit trees are greatly benefited by the use of guano; 

 having manured a border with it on which were dwarf pear- 

 trees, the question has been frequently asked of us, "if the 



