41. Soon he also learnt calotype ( talbotype ) technique and collodion process from Andreas Groll in Vienna between 1847 50. 42. McCosh also used the later collodion process though continued with the caltype process for larger prints because of its fidelity. 43. Victorian sitters who in collodion photographs look as if they are in mourning might have been wearing bright yellow or pink. 44. To wash, the emulsion is poured into a dish and the solvents are evaporated, until the collodion becomes gelatinous. 45. Collodion baby can have severe medical consequences, mainly because the baby can lose heat and fluid through the abnormal skin.46. In 1855, Rodger was awarded the Silver Medal of the Society of the Arts for his paper on Collodion Calotype. 47. Also that it was probably Fry who guided her in the collodion process that she used in the years to follow. 48. This is then poured into the other half of the collodion ; the brominized collodion dropped in, slowly, while stirring. 49. This is then poured into the other half of the collodion; the brominized collodion dropped in, slowly, while stirring. 50. The collodion membrane should peel off or " shed " 2 to 4 weeks after birth, revealing the underlying skin disorder.
