PREPARATIONS OF WOODS FOR STEREOPTICON 



These are transverse 

 sections from 1-400 to 1-600 

 in. thick, mounted be- 

 tween glass of standard 

 stereopticon- slide size. 3^ 

 x4 in., and enable the dis- 

 play of characteristic 

 wood structures, projected 

 from nature itself, in a 

 most satisfactory manner. 

 The wood section covers 

 a circular field generally 

 2f in in diameter on the 

 slide. 



Price, 50 cents each; 

 $10 per twenty-five, the 

 purchaser's selection. 



Views of Typical 

 Trees, Etc. Having 

 rather unusual opportun- 

 ity of studying trees in 

 the field, on account of 

 personally gathering the 

 woods used in AMERI- 

 CAN WOODS, the author 

 is in the habit of making 

 photographs that are of 

 special interest in the 

 study of trees. 



The. subjects selected 

 are mainly as follows : 



(a) Isolated individual 

 trees showing habit of 

 growth, natural environ- 

 ment, etc. (b) ^Iwrncttr- 

 istic barks, (c) t tower* and 

 leaves at flowering season. 

 Fruits and mature leaves, (e) Leafless braneJilfts showing winter character. Natural sizes 



are always indicated and specimens shown in fresh condition. 



Prices : Photographs unmounted, 20 cents ; mounted, 25 cents ; stereopticon slides, 50 



cents ; 25 for $10.00. 



MOUNTS OF WOODS FOR MICROSCOPE. 



These are transverse, radial and tangential sections, mostly 1-1200 in. thick, stained 

 with methyl green and mounted in Canada balsam. These are indispensable in the study 

 of wood technology. Prices, 50 cents each; f 10.00 per twenty-five, the purchaser's selec- 

 tion. 



tyit may interest our patrons of AMERICAN WOODS to know that we carry in 

 stock a supply of wood sections, such as are mounted in that work, and that we are pre- 

 pared, to replace any that may become damaged or soiled. Our charge is 10 cents per 

 specimen. The price of AMERICAN WOODS is $5.00 per part in cloth binding: $7.50 

 in half morocco: single specimen-pages, 25 cents: five for $1.00: twenty-five for $4.00; 

 texts. 50 cents each 



ROMEYN B. HOUGH COMPANY, 



LOWVILLE, N. Y. 



