No traces of fungi were seen with the strong magnifier that was used in making the 

 measurements. The injuries appeared to have started while the leaf was still in the 

 opening bud. 



No. 4. The following observations were made on a young and growing leaf of the 

 apricot, measuring, at the commencement of the experiment, 50 millimetres in length and 

 43 millimetres in width, and at the conclusion of the experiment 80 millimetres in length 

 and 77 millimetres in width, from which it will be seen that it more than doubled in size 

 , during the course of the observations. 



At the beginning there were two small holes, while at the end there were several additional 

 holes. The observations were continued for nearly one month, namely, from 24th 

 October to 21st November. The following are the details of the measurements : 



It will be seen that in nearly every instance there was a marked increase in the size of 

 the hole. The holes began as spots, mostly of whitish colour. No fungus elements were 

 seen, though searched for with the aid of the microscope. Cultures at the end gave no 

 result. 



No. 5. This leaf had two holes at the outset, and some trifling signs of the beginnings 

 of several others. The leaf was under observation for four weeks, but during that time 

 only one new hole appeared. The original ones increased considerably in size, as did 

 also the leaf itself. 



No. 6. Very young and apparently perfect leaf. 



The elongated hole 3' x '7 appeared to be of a different origin from the others, as if 

 the leaf had been whipped against some sharp point and thus given a scratch that 

 resulted in an elongated hole. 



No. 7. The following measurements were made on shot-holes in a leaf that, at the 

 beginning of the experiment, was 17 x 25 millimetres and at the close of the experiment 

 was 62 x 73 millimetres, thus showing a tenfold increase in area : 



