22 THE WOMBAT. 



3. The prints come out vigorously in developing, but become weak 

 after being dried. 



Paper not sufficiently sized, for which reason the images sink 

 into its substance, or the drying of the paper has been too 

 slow. 



. The whites of the prints have, after drying, a more [or less 

 yellowish tinge. 

 The sensitising solution in the developer is not sufficiently 



acid, or there has been insufficient immersion in hydrochloric 



acid. 



5. Black spots. 



Particles of metal embedded in the substance of the paper, 



causing a reduction of the platinum. 

 May be due also to insoluble impurities in the chloro-platinite 



of potassium. 

 These spots have a black nucleus with an extension of lighter 

 colour, like the tail of a comet. 



A FEW DEFECTS IN THE SEPIA PAPER SOLD BY 

 THE PLATINOTYPE COMPANY. 



A dirty, yellowish veil appearing on development all over the 

 print, but more observable in the lighter portions, is due to one of 

 the following causes .• — 1. Want of sufficient "Special Solution" 

 in the developer. 2. Too much exposure of the developing solution 

 to light. 3. Use of a dish in which the enamel is cracked so as to 

 expose the iron. — (Compiled) J.B.L. 



A LIST OF COLEOPTERA COLLECTED 

 NEAR GEELONG. 



By J. F. Mulder. 

 Part I. — Family Carabidce. 



34. Calosoma schayeri (Er.) Found in tbehayfields in 



summertime, Geelong. 

 118. Xanthophcea grandis (Chaud.) Under bark of gum- 



trees, Geelong. 

 127. „ vittata (Dej.) Geelong. 



„ brachinoderus (Chaud,) Under bark of gum- 



trees, Princes Bridge, 

 Geelong'. 



