1855.] Manipulation in the Calotype process, 287 



serim provinces, this Hornbill has never hitherto formed' part of 

 them. Amongst the individuals I could see, but not shoot, some 

 were apparently entirely black, and these may be the adult males. 

 The wild Karens who lived nearest to those uninhabited forests knew 

 nothing of the bird. 



On a simple method of Manipulation in the Calotype process. — By 

 J. J. G-eat, Esq. Maldah. 



In the description of the following process I make no claim to 

 originality, it being merely an adaptation of Pox Talbot's process 

 to suit the requirements of an Indian climate, the mode of mani- 

 pulation being so simplified that, with ordinary care, failure will 

 be impossible. 



Paper. — I prefer Turner's negative calotype paper to all others 

 I have tried. 



Iodizing. — I always iodize by the single-wash process, sometimes 

 first washing the paper with a solution of chloride of barium, 12 

 grains to the ounce of distilled water. I have also used bromide 

 of potassium, but cannot say that I have noticed any particular 

 benefit from its use. 



To iodize the paper, the following articles are required : 



A sheet of " solah," cork, or soft wood, larger than the paper to 

 be iodized. 



A double fold of clean flannel, or sheets of clean blotting paper. 



Silver pins, which can be made in any bazar. 



A couple of Buckle's brushes, or, what is quite as good, the neck 

 of an Eau de Cologne bottle, with some cotton-wool and a bit of 

 thick thread. 



A couple of large dishes, or trays, of glass, wedge-wood ware, or 

 gutta purcha filled with water. 



The iodizing solution. — To make which, I quote Dr. Diamond in 

 the 11th No. of the Journal of the London Photographic Society. 



Take sixty grains of nitrate of silver, and sixty grains of iodide 

 of potassium, dissolve each separately in an ounce of distilled water, 

 mix and stir briskly with a glass and so as to ensure their perfect 

 mixture ; the precipitated iodide of silver will fall to the bottom 



