28 British Association for the Advancement of Science. 
be substituted in the pier for wood. He believed that this was 
the only plan, for wherever wood was exposed to the gentle ac- 
tion of salt water, these crustaceous animals attacked it. They 
never attacked wood exposed to the more violent action of the 
waves of the sea. 
The Rev. IF’. W. Hope stated, that a memoir had been publish- 
ed on this subject, in the last volume of the Transactions of the 
Entomological Society. He had recommended gas tar to be ap- 
plied over the wood, but as this would require renewing, it would 
in the end be as expensive as covering the wood with iron, he 
should therefore prefer the latter plan. He had heard, that Kya- 
nized wood was not attacked by white ants, and he thought it 
might be applied to prevent the attacks of these terebrating ani- 
mals. These remarks led to a general conversation on the sub- 
ject of preserving wood from the attacks of insects and crustacea, 
as well as the bottoms of vessels from the adhesion of plants. 
The President observed, that he had seen vessels with tons of 
saa Naat necks and other plants and animals, attached to their 
ents were related, and observations made by 
wea Fiancis Hope, and Gray, and Prof. Henslow ; and Mr. 
Francis was requested by the President to draw up a paper on this 
important subject, to present to the Association at their next an- 
nual meeting. Mr. Francis stated, that sap-wood, exposed to the 
action of chloride of mercury, became as durable and fit for use 
as the heart-wood. 
Respiration.—Dr. Holland replied, that he had made repeated 
experiments, and had invariably found that a series of deep inspi- 
rations did always bring to the lungs a larger quantity of blood 
than previously existed. The pulse, which before had only been 
seventy or seventy-five, became eighty-five, and in some cases 
ninety, and was proportionably debilitated. Setting aside all the- 
ory, two effects followed—change in the rapidity of the pulse, and 
in its force. He brought forward a theory to account for these 
effects. But, letting his own theory alone, it was quite clear 45 
inspiration must have an effect on the circulation, Dr. Carso! 
had also stated that air passed directly into the blood. He had 
never heard this opinion before. All they were acquainted with 
air was so inspired that a certain change was effecte 
by tin the blood. By comics iy they found that 
