154 The Microscope. 



type setting, to say nothing of paper, press work, binding and 

 postage. The few subscriptions received are hereby cancelled^ 



Acknowledgement. — To Mr F. E. Ives, Philadelphia, for 

 photo-micrographs of Triceratium favus, Surirella gemma, magni- 

 fied 1,000 diameters and beautifully resolved into beads; also- 

 of bacillus tuberculosis. 1,000 diameters. — To Mr G. C. Taylor, New 

 Orleans, for slides of mummy cloth, 950 years B. C. — To Dr \Vm. 

 N. Beggs, St. Louis, for a section of the human retina treated 

 with osmic acid, a mount of great histological value and interest,, 

 the various elements being exquisitely displayed ; also for blood 

 of alligator, stained with haematoxylon, and blood of frog by the 

 osmic acid method. For his glycerine mounts Dr Beggs uses 

 Apathy's cement described in this number, following it with two 

 coats of shellac, and finishing with a layer of asphalt. The result- 

 seems to be all that the most exacting could desire. Dr Beggs' 

 preparations can be unreservedly and conscientiously com- 

 mended in every particular. 



THE Vv'ORKEES 



Dr Laveran gives a very clear account of his methods of ex- 

 amination of the blood in cases of malaria. He points out that 

 such examination is exceedingly necessary in hot countries, 

 where typhoid fever or sunstroke may be mistaken for malaria^ 

 or vice versa. An examination of the blood always puts the 

 matter beyond doubt. He recommends that the examination 

 should be made just at the beginning of a febrile attack, and be- 

 fore quinine has been administered, as during the period of 

 apyrexia the organisms are seldom found in the peripheral cir- 

 culation, but appear to be collected in the internal organs, and 

 especially in the spleen. For the examination of the fresh blood, 

 the skin should be cleansed with soap and water, rinsed with 

 alcohol and carefully dried ; then, everything being ready, the- 



