AMERICAN INSTITTTTE. 227 



nists recognize but 30 species. Many species have no thorns. 

 These have been tried in Ferrara, Italy, but they proved unpro- 

 ductive in a measure. The caper grows well in lands little suited 

 for agriculture — stony, barren. Eut it does rather better in good 

 soil and some humidity, as proved at the mouths of tlie river 

 Ehone. 



[London Farmers' Magazine.] 



STEAM CULTIVATOR. 



Every one expects a steam cultivator to perform the deep work 

 at present taxing the strength of our horses, and testing the 

 frame work of our plows. Agricultiu'ists ought not to rest con- 

 tent until they have a trenching or digging machine. The spade 

 teaches what we want. 



To cut up land one foot deep and one foot wide, it requires to 

 lift about three million nine hundred thousand pounds. Now a 

 horse power can lift 33,000 pounds per minute. Locomotive en- 

 gines, with the diggers attached, will probably be adapted to this 

 work. 



ROTATION BOOK. 



Every farm should have its rotation book, all the fields being 

 numbered, 



Fields. 1S50. 1851. 1852. 1853. 1854. 



No. 



This Rotation Book should be fit for the pocket, with the map 

 of the farm, on a small scale, in it, and pages for notes to be made 

 on the sjjot. A larger Rotation Book at home, with larger maps, 

 for the main record. It is an essential requisite on every Avell 

 conducted farm. 



THE TURNIP FLY. 



The loss this year by this fly is, we fear, more universal than 

 has happened in many years past. Complaints have reached us 

 from every part of the kingdom — from the midland counties es- 

 pecially. The devastation was so great that in forty-eight hours 

 every plant disappeared from thousands of acres. These were the 

 Swedish, and the only chance now is to replace them with com- 

 mon varieties. 



How extraordinary that this be suddenly so universal, over 

 extensive districts at the same time, in some seasons, and not the 



