accompanying order blank and the work will be supplied to them 

 serially as promptly as issued. 



TREK STUDIES will be brought out in two series as follows: 



SERIES A: -TREES AND THEIR BARKS. 



The trees selected for these pictures are as far as possible isolated 

 individuals, which, having had abundant light on all sides, have there- 

 fore had free opportunity of growth according to innate tendency. 

 Care is taken to select such trees as are fully mature and yet not old 

 enough to have become decrepit by the loss of branches or otherwise. 

 Such trees show a more or less regular and characteristic symmetry of 

 contour, ramification of branches, etc., which features are well brought 

 out in these pictures. 



To convey an idea as to size care is taken to have an object of 

 comparatively known size appear in the field generally a man, but 

 sometimes lounging cattle or other objects serve the purpose. The 

 deciduous trees ,are generally represented each by two pictures, one 

 showing it in leaf and the other without leaves. The evergreen trees 

 are generally shown each by a single picture, but sometimes by two, 

 one showing a forest-grown tree and the other a tree growing in the 

 open. 



While these pictures portray the tree as plainly the main object, 

 they also show something of its natural surroundings, and rare bits of 

 scenery are sometimes shown in the background. When these settings 

 are of importance they are mentioned in the labeling; thus adding 

 not a little of geographic interest to the pictures. 



The bark pictures are made with the camera placed near the trunk 

 of the tree so as to show detail as well as possible, and for a standard 

 of measurement a one-foot rule is fastened upon the trunk. 



Each plate is made up of the one or two pictures of the tree, as 

 the case may be, and the view of the bark. It is fully labeled with 

 technical and common names, mention of the locality where the tree 

 was photographed, objects of importance in the scene and such other 

 data as may be of interest. 



SERIES B:- LEAVES, FLOWERS, FRUITS AND BUDS. 



In these pictures we have, after a great deal of study and experi- 

 ment, quite surpassed our fondest expectations, and they have elicted 

 the strongest expressions of approval from their critics. Such detail, 

 as of nature of surface, etc. , is shown that a magnifier is often found 

 of service in examining them, quite as though we were examining the 

 real objects, and specific distinctions are just as perfectly observable 

 in them. They are made from freshly gathered specimens, even 



