182 NOTES AND MEMOEANDA. 



also brought up in many of tlie dredgings from 8 to 148 fathoms. 

 In 32 fathoms, Neepigon Bay, and in 59 fathoms, off Simmon's Harbour, 

 it was brought up in abundance from a soft clayey bottom. In the 

 deep di'edgings, it frequently came up near the bottom of the clay 

 in the dredge, and was evidently not caught while the dredge was 

 near the surface. 



Transmutation of Form among Protozoa. — Professor A. M. Edwards, 

 of America, has published some curious notes on this subject, which 

 we shall probably reproduce in full in an early number. For instance, 

 he records (as have some of our own microscopists also) the passage of 

 an Amoeba into a Kolpoda or Paramecium. Hence he considers the 

 Amoeba the young of Paramecium. This paper contains other matters 

 of importance, which we must defer noticing at present. 



Foraminifera of the Englisli Chalk. — Dr. W. K. Parker, F.E.S., our 

 President, and Prof. T. Eupert Jones, have published, in the ' Geo- 

 logical Magazine ' for March, a paper on the Eev. Henry Eley's work 

 on the above. The paper is little more than an emended notice of 

 Mr. Eley's work, so that those who have not his work may profit by 

 his views. It is well worth referring to by those who are interested 

 in this particular branch. 



NOTES AND MEMOBANDA. 



Microscopical Diagrams. — A large lot of these, 180 in number, 

 size about 22 x 16 inches, are about to be sold in America ; it may in- 

 terest some of our readers to know of it. They are finely executed 

 by a well-known English microscopist, and were prepared to illus- 

 trate a series of lectures on Fungi, Foraminifera, Polycistins, Seeds, 

 Infusoria, &c., &c., &c. They are mostly painted on tinted pai)er in 

 water colours, so as to give good contrast and be readily seen. Many 

 of them represent unique sj)ecimens observed by the author, and are 

 of the greatest value to the student of the lower forms of animal and 

 vegetable life. Address, Naturalists' Agency, Salem, Mass., U.S. of 

 America. 



Changes of Current in Lakes affect Distribution of Diatomacese, 



&c. — The ' Lens,' the first number of the American Microscopical Jour- 

 nal which has been promised so long, contains an account of a paj)er 

 by Mr. Babcock, " On Chicago Hydrant Water," showing that shortly 

 after the course of Chicago river was reversed by the deepening of the 

 Michigan and Illinois Canal, there was a marked diminution in tho 

 amount of organic matter in the hydrant water. He accounted for 

 the change on the theory that the southerly lake current flowing along 

 the western shore had brought to tho crib the lighter vegetable pro- 

 ducts of the northern streams, and that the diversion of the river 

 channel, by causing this current, opposite the city, to swerve slightly 



