Journal of Applied Microscopy. 315 



new tissue merely forming the head and tail, all growth taking place in the old 

 tissue. If the cross-piece is near the head of the animal, the pharynx, which is 

 normally placed nearly centrally, develops in the posterior part and between the 

 old and new tissue ; if the piece is from the middle of the animal, it appears near 

 the middle of the piece. The anterior end of the body in front of the eyes will 

 not form a new worm, but if the piece merely includes the eyes such a growth 

 takes place. A great range of regenerative power was shown in pieces of 

 various shapes and sizes. Position of the piece seemed more important than 

 size, as small pieces from certain places grew while larger from others died. 

 In one case a head developed at each end of a piece, and sections showed a 

 distinct double nervous system. No efforts to produce such a growth suc- 

 ceeded, so the cause for the one case is unknown. New vegetative organs may 

 appear in any part of the tissue, but the new eyes and brain only develop when 

 the new part first appears. In conclusion, the author finds that the material of 

 the body is almost as plastic as that of a developing egg. 



Muller, E. Driisenstudien. Zeitschr. f. wiss. The author used other means than the 

 Zool. 64: pp. 624-647, 2 pis. famous Golgi method to demonstrate 



the secreting capillaries of the gastric glands found in the stomach of a dog. 

 The tissue was laid for twenty-four hours in a mixture of 40 pts. 3.5 per 

 cent, potassium bichromate and 10 pts. of commercial formalin), and then for 

 one or more days in bichromate alone. They were then washed and hardened 

 in alcohols, increasing strengths. The sections were stained in Heidenhain's 

 iron hematoxylin and gave admirable results, serving well to confirm those 

 of the Golgi process. The author shows the existence of not only the usual 

 cross channels to the lumen, but also the intracellular secreting capillaries. 

 The fluids of both central and parietal cells rise from granules which are at 

 first stainable and later lose this power. In the parietal cells only are there 

 intracellular canals. The author shows from further work on the secreting 

 glands of the cat that empty mucous and serous cells cannot be distinguished 

 from each other nor from Gianuzzi's crescents, but their distinction depends 

 on the cell contents. He further urges that more consideration be paid to 

 the way in which cell contents change from a granular to a fluid condition. 



Nicholls, A. Q. Sudan III, a Selective Stain The author in this note confirms the 



for Fat. Microscopical Bulletin, 15: p. ti. , r t-. • i • jz i- ^^ • ^ • 



^ > r J work of Rieder m tindmg this stain, 



Sudan III, useful in histological work, especially in staining fat. A saturated 



solution of Sudan III in 90 per cent, alcohol is filtered, and diluted two-thirds 



with 50 per cent, alcohol, and again filtered. Sections are allowed to stay in 



this mixture for a few minutes and then washed in 60 to 70 per cent, alcohol, 



drained and mounted in glycerine or Farrant's medium. Fat takes a carmine 



red stain, appearing golden yellow in small particles. 



„ ^ . ^ , ^ ^. , , „ The author summarizes his results in 



Dendy, A. Development of Sphenodon. Pro- 

 ceedings of the Royal Society, London. the Study of Sphenodon and finds the 



63: pp. 440-443- following important features. The 



whole period of development lasts thirteen months. Eggs are lai'd in November 



and hatched in December of the next year. As is frequent in such cases, the 



