TRANSACTIONS OF SECTION D. — DKPT. ZOOLOGY AND BOTANY. 377 



TUESDAY, AUGUST 2G. 



The following Papers were read : — 



1. On a Spore- producing Glaiocapsa, from the great Conservatory at Chats- 

 worth. By Professor M. A. Lawson. 



2. On the Capreolus (of Lister) or the Spermatophore of some of the Indian 

 species of the Helicida. By Col. H. H. Godwin- Austen, F.Z.S. 



The author points out the importance of rnaMng an examination of the animal 

 in many genera of the Helicidre, and thus obtaining better characters for specific 

 distinction than are often presented by the shell alone. The organ first discovered 

 and described by Lister in 1G94 is treated of, and the views of later naturalists 

 filluded to. Many different forms of the Spermatophore found in Helices from 

 Eastern Asia are shown, and the position of the organ in the generative system 

 of Helicarivn magnified from Burmah is described. 



S. On a Sponge from the Norwegian Coast, simulating a Hydroid Poli/p. 



By W. J. Sollas, M.A. 



4. Comparison of the Effects of the Frosts of 1860-1 and of 1878-9. 

 ByE. J. Lowe, F.li.S. 



The greatest cold of 1860 exceeded that of last winter by 10°; it was 0° below 

 zero in 1800, it was 4° above zero in the last frost, i.e., 4 feet above ground. 



The present paper records the great difference in the effects in the two frosts at 

 Hightield House. 



frost of 18(J0 



Frost of 1878 



Elm (broad-leaved) . 



Acacia (long-spined) . 



Bay (sweet) .... 

 Cedar (deodar) . . . 



The arbutus .... 



Aucuba 



Pampas grass . . . 



Araucaria imbricata . 



Yew 



Wellingtonia gigantea 



Evergreen oak . . . 



Ivy 



Fennel 



Sage 



Roses, standards . . 



Uninjured 

 Slightly injured 



Killed to the ground 



f Became deciduous ; "| 

 ^ otherwise uninjured J 



Killed to the ground 



Killed 

 / Killed to where buried "\ 



L in snow 

 Slightly damaged • 

 Much injured 

 /Many killed; all be 

 \ came deciduous 

 More or less injured 

 Uninjured 

 Killed 



All killed 



./ 



} 



( Three-fourths of the boughs 

 I killed back at least 2 feet 

 [ Many boughs killed, and 

 was a month later in 

 (_ coming into leaf 

 f The ends of the shoots only 

 \ killed, and all the leaves 



Not injured 



j Half the branches killed, 

 \ the others injured 

 Uninjured 

 Killed 



Uninjured 



Slightly damaged 

 Slightly injured 



Uninjured 



More or less injured 



All killed 



Uninjmed 



/"Many killed, nearly all 



\ injured 



