PREPARATIONS OF WOODS FOR STEREOPTICON. These are transverse sections, 

 from 1-401} to 1-6U0 in. tliick, mounteil between glass of standard stereopticon slide form, 

 3 1-4x4 in. in size, the section covering a circular area generally 3 3-4 in. in diameter. They 



enable a display of wood struc- 

 tures to an audience in a most 

 satisfactory manner, projected 

 from nature itself. No one 

 who uses tlie stereopticon 

 should fail to try these valu- 

 able mounts. We have a large 

 series. 



Price: 50 cts. each; 40 cts. 

 each in quantities of twenty- 

 five or more; sample 2.5 cts. 



PREPARATIONS OF 

 WOODS FOR MICROSCOPE. 



These are transverse, radial 

 and tangential sections, mostly 

 11200 in. thick, stained with 

 methyl-green and mounted in 

 Canada balsam. Of these we 

 have also a large series, the 

 value of which is appreciated 

 by those who have micro- 

 scopes and are prepared to 

 look into the wonderful mi- 

 nute structure of woods. It 

 is the possession of our large 

 stock of these mounts that has 

 enabled us to include in the 

 plan of the HANDBOOK the 

 photo- micrographs of wood- 

 structures. 



Price: .50 cts. each; 40 cts. 

 each in quantities of twenty- 

 five or more; sample 25 cts. 



VIEWS OF ISOLATED 

 TREES showing habits of 

 growth. Our field work gives 

 us excellent opjaortunities to 

 make negatives illustrative of 

 this interesting subject, and 

 we have already a consider- 

 able series which we are constantly adding to as we find suitable subjects. We have also a 

 large series illustrative of the 



FLOWERS OF TREES. These have been photographed while fresh, even before their 

 wilting, against a measured back-ground to indicate size, as per plan adopte<l with pictures of 

 leaves, fruits and branchlets in 

 the HANDBOOK. It is a choice 

 series covering most of the species 

 of northeastern United States and 

 Canada. We are prepared to fur- 

 nish both photographs and stere- 

 opticon views of the isolated trees 

 and flowers, as well as the leaves, 

 fruits, leafless branchlets and 

 barks, which are shown in the 

 HANDBOOK. 



Prices: Contact-print photo- 

 graphs (5x7 or 5x8 in.), mounted. 



25 cts. each; unmounted, 20 cts. each; stereopticon views, 50 cts. eaclr; 40 cts. each in quan- 

 tities of twenty-five or more; samples 25 cts. 



A Stereopticon Mount. Natural Size. 



FOR THE 



MlCRQSCOPE, 



R9MEYN B HOUGH 



PUBLISHER 

 ■^WERICAN WOODS,' 

 ^V^UOy/Vi LLE N Y , 



QUERCUS 

 OBTU8[LQB^,MlCHX. 



Post OAK. > 



JY R B HOUGH-, B A 

 LOWVILCE.N.; 



A Microscope Mount. Natural Size. 



