Marion and Co., compiler · London : Marion and Co. · leaf 42
34 PRACTICAL GUIDE TO PHOTOGRAPHY. What we wish to produce thus by the camera is a negative representation of the picture on the ground glass. By the exposure which we have given we have got this negative, so to speak, in lootential. That is to … say, there is on the plate what is called a "latent image." That is to say, although there is as yet nothing visible, yet there is such a change of the silver bromide particles that, when the operation of development is performed, the negative will appear. We must further explain what is the effect…
![An illustration from St. Nicholas [serial] (1873)](https://img.insideoutlibrary.com/img/200/ia-stnicholasserial332dodg-214-288.webp)
![An illustration from St. Nicholas [serial] (1873)](https://img.insideoutlibrary.com/img/200/ia-stnicholasserial06dodg-174-134.webp)
