313 GOODFELLOWj ON DISEASES Or THE KIDNEY. 



power as the water ; so that displaying it to advantage required 

 some little trouble in the way of careful focusing, and many 

 experiments as to the best angle at which the mirror should 

 be turned to direct the light. AYhen all Avas accomplished, 

 it was seen that the floscule had her abode in a clear trans- 

 parent cylinder, like a thin confectioner's jar, which she did 

 not touch except at the Ijottom, to which her foot Avas 

 attached. Lying beside her in the bottle were three large 

 eggs, and the slightest shock given to the table induced her 

 to draAV back in evident alarm. Immediately afterwards she 

 slowly protruded a dense bunch of the fine long hairs, which 

 quivered in the light, and slione with a delicate bluisli-greevi 

 bistre, here and there varied by opaline tints. 



" The hairs were thrust out in a mass, somewhat after the 

 mode in which the old-fashioned telescope hearth-brooms 

 were made to put forth their bristles. As soon as they Avere 

 completely everted, together with the upper portion of the 

 floscule, six lobes gradually separated, causing the hairs to 

 fall on all sides in a graceful shower ; and Avhen the process 

 Avas complete, they remained perfectly motionless, in six 

 holloAV, fan-shaped tufts, one being attached to each lobe. 

 Some internal ciliary action, quite distinct from the hairs, 

 and which has never been precisely understood, caused gentle 

 currents to flow towards the mouth in the middle of the lobes, 

 and from the motion of the gizzard, imperfectly seen tlirougli 

 the integument, and from the rapid filling of the stomach 

 Avith particles of all hues, it Avas plain that captiA'ity had not 

 destroyed the floscule's appetite, and that the drop of water 

 in the live box contained a good supply of food.'^ 



Mr. Slack has illustrated his remarks Avith woodcuts, and 

 several very beautifully executed plates accompany the 

 objects he describes. We recommend Mr. Slack^s volume 

 as a gift-book for the encouragement of young microscopic 

 observers. 



Lectures on the Diseases of the Kidney. By S. J. Goodfelloav, 

 M.D. London : Hardwicke. 



We do not notice Dr. Goodfellow's book for the purpose of 

 criticising or recommending his diagnosis or treatment of dis- 

 eases of the kidney, but to draAV attention to the fact that he has 

 appreciated and used the microscope in ascertaining their 

 nature. Although this may be saying nothing more than ought 



