ELEMENTARY PHOTO-MICROGRAPHY. 1 1 



article at hand is capable of being pressed into 

 service, or if the operator dislike the preparation of 

 his own . objects he has at command for a small 

 sum about 40,000 fine specimens of infinite variety, 

 which can be sent by post from the circulating 

 departments of Mr. C. Baker, and Messrs. Watson 

 and Sons, of Holborn, London. 



From his negatives the worker may make both 

 prints and lantern slides, and so provide a feast of 

 entertainment and instruction for himself and his 

 friends. 



But the beginner is warned against letting the mere 

 pursuit of pleasure keep him from the educational 

 advantages of systematic work. Hence, instead of 

 making desultory efforts, he is strongly advised to 

 take some special subject and master it before pro- 

 ceeding to another. For instance, he may select 

 plant life, beginning with the simple cell, modes of 

 cell growth, shapes of cells, cell contents, and so 

 following on to the various modifications in highly- 

 organised plants. Seeds, pollen, flowers, and sec- 

 tions of stems are also interesting objects to be 

 photographed, the study of which should be con- 

 tinued with their delineation. 



Thus pleasure and knowledge will go together, 

 and every step will prove an incentive to further 

 progress. 



On the other hand, if the worker take up the 

 matter as one merely for amusement he is not likely 

 to master the difficulties that will present themselves 



