96 



CENTRAL SCIENTIFIC CO., CHICAGO, U. S. A. 



No. 1560, Fig. 1. 



No. 1560, Fig. 2. 



No. F8841. 



No. F8847. 



1560. 



1562. 



1564. 



BOTANIC AIi PLANT PRESS, Riker'S, consisting of a series of layers of tubular paper in 

 serted between sheets of blotting paper and absorbent cotton so that all the moisture is freelj 

 carried off by a current of hot air passing through the tubes. Fig. 1 represents a section 

 showing the plant laid on the cotton. Fig. 2. The method of confining the heat from a lan- 

 tern by a wrapping of paper dries the plants in a few hours and is adapted for camp or the 

 tropics. If hung above a burner or placed in the sun splendid results are also obtained 

 Directions for use accompany each press. 



No A B 



Size, inches 9x12 12x19 



Each $2.00 3.25 



BOTANICAL PRESSING PAPER, thin white absorbent paper, folded and cut, for use with 

 No. 1530 Absorption Paper per 100 sheets .50 



BOTANICAL SPECIES COVERS, of manila paper, size folded, Il%xl7% inches. 



Per 100 sheets 1.50 



HERBARIUMS. Made in two sizes, 7%x9% inches, and 11x17 inches, uniform in design with 

 the Atlas Not Books. The portfolio form permits the specimens to be mounted scientifically 

 according to the genus and species to which they belong. The plan also permits adding to or 

 removing from the collection at any time. Hints on collecting, pressing and mounting speci- 

 mens are found on inside cover pages. Each sheet contains a legend for classification, and an 

 index is furnished. 



No 



Atlas No 



Size, inches . . 

 No. of sheets. 



A 



709 

 x9 

 40 



B 



1117 



11x17 



25 



F8841. HERBARIUM, complete, as described above .30 .57 



F8842. HERBARIUM COVERS only Per set .12 .20 



F8843. MOUNTING SHEETS only Per 100 .42 1.40 



F8847. PLANT DESCRIPTION PAPER, with spaces on one side for complete analysis of a plant; the 



7%x9% inches, perforated for Nos. F8811 or F8842A Covers. In envelope 



I 



other side unruled. 



of 20 sheets '.*. Per envelope 



.07 



