122 Lincolnshire Notes & Queries. 



He therefore imported numbers of these insects to the infested 

 American districts, and on being placed on the orange trees 

 they grew and multiplied until they practically exterminated 

 the " mealy bug " within a comparatively short space of time ; 

 in fact, it is said that a certain amount of the insect had to be 

 cultivated, if we may so call it, in order to keep up the supply 

 of the Vedalia. 



I had at first intended to give some account of certain of 

 the insect pests before referred to, but I find that I have 

 already trespassed too much upon your time. As you have 

 been kind enough to re-elect me as President for the year 1897, 

 I may perhaps be allowed, if all be well, to continue the 

 subject in my next presidential address. 



I would conclude by again returning to the subject of the 

 Museum, and expressing a strong hope that it may not be long 

 before we obtain, through individual or collective generosity, a 

 suitable building, and in that case I feel sure that we shall soon 

 get together a collection of objects of interest which will be 

 fully worthy of this large and important county of Lincoln- 

 shire. 



THE LINCOLN GAP. 



THE Rev. S. Bateman in his paper, in the last number of 

 Lincolnshire Notes ff )ueries^ on my address on the 

 "Lincoln Gap," gives certain reasons for supposing that 

 the change in the Trent's course took place after, and not 

 before, the Glacial era ; but I fail to see how the reasons he 

 gives affect the question. 



Some of the changes Mr. Bateman speaks of are of, compara- 

 tively, quite recent origin ; while the change in the Trent's 

 course must have occurred thousands of years ago. 



Mere changes of bed are of common occurrence in the 

 history of the Trent. Indeed, whenever you meet with a river 

 with a wide, flat basal-area, like that of the Trent, you may 

 safely assume that it is continually shifting its bed the broad, 

 flat area being, in fact, the result of such shifting. 



In places also where rivers form two or more channels, as 

 they often do, all but one of such channels are sometimes cut off 



