Reports of Judges. 65 



The encased block tin tiil^e is made of any desired thickness, is 

 perfectly uniform throughout the entire length of the pipe, and 

 is firmly and completely united to the encasing lead by an inter- 

 vening layer of solder, Avhich makes separation impossible. 



The strength of the tin and its low density as compared with 

 lead, make it possible to diminish the weight of the combined tube 

 by fifty per cent, and the lead-encased block tin pipe, although 

 weighing hardly half as much per foot as lead pipe of the same 

 internal diameter, is still capable of withstanding a greater pressure 

 without bursting. 



This tube combines really all the good qualities of both lead and 

 tin; it is stronger, as flexible, and cheaper per foot than lead pipe, 

 while it completely protects those who use it from the insidious 

 lead poisoning, which is liable to occur whenever lead pipe is used 

 for conveying water for domestic purposes. 



We consider this the most perfect tube for conveying water yet 

 invented, and believe that its great sanitary importance entitles its 

 inventors to the highest premium given at this fair. 



No. 1022. Specimens of Water Pipe. (J. K. Mayo.) Very inge- 

 niously formed, strong and cheap. Its durability can only be 

 proved by the test of actual use-; it will depend on the character of 

 the cement used to unite the layers of wood, on the thickness of the 

 internal coating of asphaltum, and on the lining of cement. 



No. 97. Portable Shower Bath. (H. W. Pond.) Its merits are 

 cheapness, simplicity and durability. Will be particularly useful 

 where water is not abundant, la the best of its class kno^^^l to 

 the judges. 



No. 124. Stationary Water Closets. (H. H. Craigie.) Is decided 



to be the best on exhibition, and the best known to the judges. 



The water jet attachment is particularly meritorious, though it 



might be improved. 



• C. F. CHANDLER, | 

 JAMES IXGRAHAM, V Judges. 

 W. K. THOMAS, j 



No. 688. Double Dial Improved Lock. (Linus Yale, Jr.) Is 

 decided the best on exhibition. Its merits are: 1. That it cannot, 

 as far as the judges can discover, l^e picked by any known method 

 of lock-picking. 2. That the whole circumference of the tumblers 

 can be utilized for chancres of combination. 3. That the timi- 

 biers can be arranged for opening the lock by turning the register 

 spindle in either direction at pleasure. 4. That the drilling out 



[Inst,] 5 



