EXPERIMENT STATION EEPORT. 535 



in one plane as possible. Black ink has proved more satisfactory than 

 red or blue. It has been an advantage to stamp the section a few times 

 upon refuse paper before the permanent print is made upon the sheets 

 selected for preservation. Two sections have been taken of each fruit 

 selected as a representative of the commercial sort or cross therefrom. 

 Practically a full set of such prints for the tomatoes was secured the 

 present season. It was found most convenient to first make a print of 

 the axial section — that is, by cutting the fniit from stem to opposite 

 end and then cut these two halves at right angles to the first printing 

 surface and the axis of growth. A better print can be made by taking 

 a separate fruit for each view, but experience shows that it is well to 

 use the same fruit for both the longitudinal and the transverse print. 



In the first-named section the width and depth of the fruit are 

 shown ; the wall, whether thick or thin, is clearly given, and something 

 of the interior structure, while the transverse print gives more of detail 

 of the interior of the fruit, as, for example, the number and size of the 

 seed cavities (lodicels), the thickness of the partitions, and also of the 

 outer wall, in addition to the size of the slice that may be taken across 

 the fruit. Plate XVII. shows something of the nature of the ink- 

 prints, samples of which were cut from the record sheets and repro- 

 duced in the engraving, natural size. 



A similar set of prints was secured of the beans, in this case showing 

 the pod cut lengthwise when fully grown, but immature, and a view of 

 a section across the pod made through the middle of the seed and 

 another between two adjoining seeds. Such a print records the exact 

 size of the pod in length and width, while its thickness is given in the 

 two transverse views. The number, size and location of the seeds are 

 shown and made as to the thickness or fleshiness of the pod. 



Squashes and eggplants can be similarly shown .in section, while 

 cucumbers lend themselves particularly to the making of such ink- 

 prints. Sweet com in transverse section of the ear, while young, is 

 quite satisfactory as to many of the details. The list of subjects can 

 be extended indefinitely. 



