MARCH. 87 



cottages about here are generally built of thick stone, and, in addition to 

 the heat absoi'bed by the sun's rays, they are wanned internally by 

 the fires of the house ; the wall, therefore, of every cottage is, in fact, 

 a hot wall, slowly giving off its heat to the tree trained upon it, and 

 repelling the action of frost, while the projecting thatch or tiles keep all 

 perfectly dry, and arrests the heat radiated from the surface of the wall. 



I am sorry to differ from the opinion given by Mr. Saul, but the 

 success of Mr. Johnson bears so much and so forcibly upon the advan- 

 tages of protection, that I thought it well to advert to it. 



Remember, then, gentle reader, that at Strathfieldsaye there is as 

 fine a wall of Apricots as any in the country, which produced no fruit 

 till protected, and yielded a splendid crop the first most trying season 

 after its application. 



JSuneham Park. Henry Bailey. 



EDWARDS' REGISTERED EARWIG TRAP. 



In our last number a description of this valuable invention to Dahlia 

 growers was given by ]\Ir. C. J. Perry, of Birmingham, who is well 

 known as a very successful cultivator of the Dahlia. Since the 

 publication of his letter we have visited Birmingham and examined 

 the invention, and found it to be singularly effective in trapping ear- 

 wigs, and no one should now think of using flower pots, as they are to 

 be offered at a low price, and will be advertised immediately. We now 

 give two illustrations of the trap, to enable our readers more fully to 

 comprehend its usefulness. 



The earwig trap is a bell-shaped iron box, preserved from atmo- 

 spherical injury by being japanned ; its colour is a dark shade of olive 

 green ; it is three inches in diameter at the bottom, and four inches high. 



Figure 1 is a representation of the external appearance of the trap, 

 and Figure 2 is a section showing the internal arrangement. A is a 

 fluted cone, open at top and bottom. B is another cone of plain 

 metal, joined to the top of the cone A, but having a wider base, so 

 that there is a clear space about half an inch wide between the cone 

 A and the cone B. C is a third cone, joined to the others at the top, 

 but spreading at the bottom, so as to leave another half-inch space 

 between it and the middle cone B. D is the outer case, fitting closely 

 round the base of the cone A. E is a moveable cover or lid. 



In using the trap, the training stick is placed inside the fluted cone 

 A, the projecting portions of the flutes hold the stick tightly, and there 

 are spaces for the insects to crawl up ; a little coarse sugar is placed 

 inside the trap. The insects enter the trap through the opening at the 

 top of the cones, and passing down the outside of the cone C, drop on 

 to the bottom of the case D ; they are now effectually imprisoned, for 

 there is no o her outlet than the hole by which . they entered, to reach 

 which they must traverse the whole up and down route intimated by 

 the dotted lines and arrows in Figure 2, besides which they wifl have 

 to turn the sharp angles at the bottom of the cones, a process almost 



