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STATE GEOLOGIST. 
Vertical section through Martens apparatus for measuring constancy 
Olav Ut eM meee MeN cats edaneintn ds aaa temank hace eeu aie naeieon ssn Sane 
Partial vertical cross-section through mechanism of Martens appa- 
ratus, Showing method of transmitting and magnifying changes of 
eat of cement block on which the apparatus rests. . aXe 
A Martens apparatus, showing ten cement blocks under austere 
ONS CLaveaerS,OHE AiO NUDADOAY chesuk amaisle end e Muclcte aves chanel oem nn eee 
Curves showing the regularity with which the calorimeter detects 
and measures the presence of free limein Portland cement......... 
Mine Waser Soci (Comnnliny ayo owns, ooccncesvaccoucunssbo0b006 
Apparatus for determining weight of one liter of cement. 
Specific gravity apparatus, according to Le Chatelier. . 
Vicat’s needle for measuring standard consistency of aernavent sanortiens, 
and also detecting moment of initial hardening.................. 
Standard form of brickette for tensile test....... PAGE Renaan near tant 
