MOUNTS OF WOODS FOR THE LANTERN 



These ;ire transverse sections cut so tliin as to lieaiitifull>- reveal characteristic 

 structures — 1-4U0 to l-OUd in. in thickness — and mounted between glass in standard 

 lantern-slide form. The secticai g-enerally c^n-ers a circular held 2>4 in. across, and 

 when projected upon the screen displays a view of wood-structure which is a revelation 

 to the casual ohserver and a delight to the student. Our series covers practically all of 

 I he important uoods of the United States. 



Price: all cts. each; 40 cts. eacli in quantities of 25 or more. 



VIEWS OF TREES. THEIR LEAVES, FLOWERS FRUITS. BARKS, AND 

 BRANCHLETS FOR THE LANTERN 



These represent the residt ol nian> > ears watching-out the continent o\er, in a 

 life devoted to nature-study, to liud suita!>le suhjects. and then of careful photograph}-. 

 The series stands unique in comprehensiveness and instructi\e \"alne. and enables one 

 with the lantern tci go atield, so to spetilc. with his audience and study the trees. He 

 can show- them and all their parts better than would lie possiide at any one season of 

 the year on an actual lield trip. The series co\ers practically all of the trees of the 

 interior and eastern states and i-nany of tlu'Se of the far west and south. The\- are 

 grouped as follows: 



(a) Isolated individual or small groups of trees, which sliow characteristic habits 



of growth, natural en\ iroiinient. etc. Deciduous -[lecies are photographed generally 

 bcith in sttmmer and \\-inter. tii sl^(:)^^- lealy anil lealless condition. 



(b) Characteristic barks of trees, a ■nie-foot rule being displayed to show size of 

 trunk. 



(c) Flov/ers of trees, and such coinlitions of leaves as exist at the corresponding 

 season of the year. 



(d) Fruits and mature leaves. 



(e) Leafless branchlets, showing tlic interesting cliaracters by which the trees may 

 be known in \\-iiUer. 



The subjects of classes c, d, and e are photographed while fresh, even before their 

 wilting, against a bac1<.ground ruled into s(|u:ire inches, b}- means of wliich natural 

 sizes are at once apparent. 



Price: 50 cts. t;;ch; 40 cts. each in i|uantities of 25 or more. Contact-print photo- 

 graphs (mostly 5x7in.) ,^5 cts. each. 



MOUNTS OF WOODS FOR THE MICROSCOPE 



Each slide bc:irs a transverse, radial, and tangential scctimi, l-loOO in. thick, 

 stained with methyl green and mounted in L'auada balsam. They :ire invaluable for 

 shi'wirig minute wood jtructures with the hi.gli power mierosccqic — the ultimate in 

 wood identiricalioii — and tire highly jirized by the siudeut ot woods. Our series covers 

 most of the woods of the L'nited States. 



Price: 50 cts. each: 40 cts. each in qnanlities of 25 or more. 



