268 Proceedings of the Royal Society 
intended to conceal its secrets for the benefit of these latter 
times, and for this purpose had left a mathematical sign of a cross 
joint on the floor of the gallery, by which some man in the distant 
future, visiting the interior, should detect the entrance to the 
chambers ; and which secret sign Professor Smyth himself was, as 
he believes, the first to discover two years ago. The secret, how- 
ever, if any such was placed there, for the detection of the entrance 
to the interior chambers, has been thus discovered some 1000 years 
too late for the evolution of the alleged miraculous arrangement. 
In relation to the Great Pyramid, as to other things, we may be 
sure that God does not teach by the medium of miracle anything 
that the unaided intellect of man can find out ; and we must beware 
of wrongously and disparagingly attributing to Divine inspiration 
and aid, things that are imperfect and human. 
The communication concluded by a long series of remarks, in 
which it was pointed out that at the time at which the Great 
Pyramid was built, probably about 4000 years ago, mining, archi- 
tecture, astronomy, &c., were so advanced in various parts of the 
East as to present no obstacle in the way of the erection of 
such magnificent mausoleums as the colossal Great Pyramid and 
its other congener pyramids undoubtedly are. 
2. Note on the Occasional Occurrence of the Musculus Rectus 
Thoracis in Man. By Professor Turner. 
During the last winter session, I communicated to the Society* 
a paper on the “ Musculus Sternalis,” in which I argued that the 
longitudinally arranged muscle, occasionally found superficial to 
the sternal fibres of origin of the pectoralis major, was not, as anato- 
mists have usually described it, homologous with the anterior or 
thoracic fibres of the mammalian rectus, but belonged to another 
group of muscles. 
Since that time I have met with two subjects in the dissecting- 
room, in each of which a longitudinal muscle occurred, lying in 
contact with the outer surface of the anterior extremities of the 
* Proceedings, 21st January 1867, and Journal of Anatomy and Physiology, 
May 1867. 
