PLATE vn. 



Pkosphalft caladus, iiric arid ni/c/etts. 



Calculus- of o.xahite of //me. 



m t'^^'" 







Hefia/ cffMs. Some deprived nf 

 epiihelffrrn,. Two cuys deeper co/ored 

 from fhe pre^eMre of tfT^ate of sod/i . 



Sf/ruff/i/ forcepA' u^vefi 

 j/Uf'i!io\'i^if/ ralcidi . 



Haiiips.del «fter Hiitirel D'Arboval 



CALCULIAND IKSTRUMEINT FOR I^{EM0\:M. 



JULIUS Bl EN aCO N ' 



