RESIGNING THE CHAIR. 9 



difference between the Arenaceous, Porcellanous, and Hyaline 

 Groups have been well exemplified, and the curious phenomenon 

 of isomorphism adequately pointed out. 



Mr. S. M. Malcomson's notes on the same subject have 

 worthily seconded those of Mr. Elcock, special reference being 

 made in the case of Bigeneritia to the dimorphic growth of the 

 shell, from an early biserial arrangement to a straight axis at a 

 subsequent period. Mr. Malcomson is also the author of some 

 valuable notes on the Ostracoda in reference to a slide of Cypris 

 virens. 



Occasionally we find that the notes give rise to useful 

 discussions on disputed points, as in the case of Rev. W. Locock's 

 notes on the mode of attachment of flies' feet ; and the identity of 

 a supposed Cidaris spine by Miss Henty. We may note how 

 sometimes a slide that has been sent round the Society's boxes 

 usque ad nauseam without any information, may suddenly become 

 valuable by a little expenditure of time and patience upon it, 

 as for instance Mr. D. G. Prothero's and Mr. E. Hopes' sHdes 

 of Spinal Cord. 



Among the Notes relating to the Crustacea^ we find one 

 written by our late lamented friend. Col. H. Basevi, viz., that on 

 Palinurus vulgaris. The tribe of insects as usual attracts a 

 considerable number of writers, many of whom have sent us 

 interesting communications, from which it is difficult to make a 

 selection. Those of Mr. C. F. George and Mr. R. H. Moore on 

 the Water Mites may perhaps be mentioned. The Infusoria do 

 not appear to attract all the attention they deserve, perhaps on 

 account of the difficulty of preparing good slides such as will give 

 any adequate idea of the appearance of the creature during life. 

 A very successful attempt, however, in this direction comes 

 recently from the fertile pen of the Rev. C. H. Waddell, on what 

 appears to be Epistylis Hicablis. Mr. A. Milroy's slides and 

 notes on Morbid Anatomy are welcome contributions in a field 

 otherwise almost unknown to our members. 



In the department of structural Botany, the signature of the 

 Rev. W. H. Lett meets us with marked frequency, as does that of 

 Mr. C. V. Smith, whose beautiful slides we have so frequently 

 admired. A very interesting note on Utricularia and its curious 



