1012 SEC. 19. EDUCATIONAL APPLIANCES. 



deconstruction of numbers, the four fundamental rules of arithmetic, fractional 

 decimals, the formation of the square and cube of numbers, the extraction of 

 then* roots, and the generation of metrical measures, &c., &c. (Extract from 

 the Keport of Mr. Andre Van Hasselt, Inspector of the Normal Schools of 

 Belgium.) 



4003a. Machine for Arithmetical Instruction. 



Antoine Arens, Frere Marianus, Rue de Bruxellcs, Namur. 



APPARATUS FOR INSTRUCTION IN PHYSICAL 

 SCIENCE, CONTRIBUTED BY THE COMMITTEE 

 OF THE PEDAGOGICAL MUSEUM, RUSSIA. 



APPARATUS FOB INSTRUCTION IN PHYSICAL SCIENCE IN 

 MILITARY SCHOOLS OF THE HIGHER AND LOWER GRADES 

 IN RUSSIA. 



4004. Bauler's Inclined Plane illustratiDg the acceleration 

 of motion. 



4005. Apparatus illustrating the Expansion and Fusion of 

 Bodies from Heat, constructed under the direction of the Physical 

 Section of the Pedagogical Museum. 



4006. Slides, with weights, for illustrating the force of Cohe- 

 sion, constructed under the direction of the Physical Section 

 of the Pedagogical Museum. 



4008. Wheel with Graham's Anchor. *By Lermontoff. 



4009. Hauler's Lamp, with Gasometer. By Lermontoff. 



4011. Caoutchouc Electrical Machine. By Kresten. 



4012. Apparatus for preparing Oxygen. By Kresten. 



MATHEMATICS. 

 A. ARITHMETIC. 



4O19a. Sets of pegs for integers and fractions. 

 4019b. Kanaeff's arithmetical box. 

 4O19c. Kanaeff's arithmetical box, coloured. 



4O19d. Wooden blocks divided into cubes for the com- 

 parison of numbers. 



