216 PUZZLES IN palJeontology. 



easy surface for the application of water-colours. Bromide paper 

 of the finer qualities give excellent prints. It is also very conven- 

 ient, since the same chemicals that are used for negatives are used 

 in developing them, and the exposure can be made at any time in 

 the dark room by gas-light. 



The toning processes require a little practice in order to be 

 successful, and need to be practically learned. Perhaps it would 

 be more convenient for those who have but little spare time to 

 send the negatives to one accustomed to printing line work, and 

 who has all the appliances and chemicals at hand. 



pU53lC0 ill paU^outoIoov'. 



By Mrs. Alice Bodington. 



EVERY branch of biological research, whether it deals with 

 the animal or vegetable kingdom, leads more and more to 

 the conviction that evolution is the leading law of organic 

 nature. Were all fossil remains of animals destroyed, embryology 

 and comparative anatomy would lead us to the same conclusion. 

 Indeed, so formidable are the breaks in the geological record — 

 so formidable it is likely they will ever be — that we should be 

 utterly at a loss to conceive what were the first beginnings of 

 animal life, unless embryology and comparative anatomy had 

 come to our assistance. 



It was, until lately, generally believed that the rocks of the 

 oldest, or Laurentian, series contained the remains of at least one 

 organic being — the so-called Eozdoii Caiiadcnse. It was con- 

 sidered to be a Foraminifer, belonging to the Protozoa, or lowest 

 form of animal life. So exactly were the conditions mimicked 

 which characterise the most complicated form of Foraminifers, 

 that many of the wisest geologists were deceived. In fact, the 

 question was considered as settled beyond the necessity for further 

 discussion by Sir Charles Lyell, Dr. Carpenter, and others. Pro- 

 fessor Moebius was destined, unwittingly, to " play the part of 

 Balaam." In the coral reefs of Mauritius he had found a forami- 



